Eco
National Geographic
Since 1888, we've traveled the Earth, sharing its amazing stories with new generations. Official Twitter account of National Geographic.1,897,471 followers | Follow
New Scientist
New Scientist is the world's leading science and technology weekly. http://www.facebook.com/newscientist560,380 followers | Follow
Greenpeace
We're an independent global campaigning organisation acting to change attitudes and behavior, to protect the environment and promote peace.489,788 followers | Follow
Scientific American
Scientific American Magazine and online, over 165 years of science news367,165 followers | Follow
Nature News&Comment
The latest science news and opinion from @NatureMagazine. Winner Best Twitter, Online Media Awards 2011, and Shorty Award for science, 2012.360,362 followers | Follow
Reuters Science News
From newly charted astronomical anomalies at the far reaches of the universe to the rise of nanotechnology, nobody covers science like Reuters.com.316,218 followers | Follow
World Food Programme
The official World Food Programme Twitter page - fighting hunger worldwide. If you're reading this... you can help! Go to http://www.wfp.org/get-involved281,956 followers | Follow
Nature Rocks
The Nature Conservancy's Nature Rocks program aims to inspire and empower families to play and explore in nature for happier, healthier and smarter children.191,245 followers | Follow
TreeHugger.com
Links, Ideas and Conversation from the TreeHugger hive mind, the latest in modern green.169,306 followers | Follow
EcoInteractive
Eco Preservation Society: Inspiring Action, Empowering People,Connecting Communities & Transforming the Planet through Conservation, Reforestation & Education160,716 followers | Follow
World Wildlife Fund
WWF works to build a future in which human needs are met in harmony with nature. Follow World Wildlife Fund and share your love of all things wild.157,476 followers | Follow
JaneGoodallInstitute
Find us on Facebook: www.facebook.com/theJGI and follow our youth program @RootsAndShoots.120,697 followers | Follow
Nature Conservancy
The Nature Conservancy welcomes you to its official Twitter site! We're a leading conservation organization working for people and nature.119,259 followers | Follow
HuffPost Green
Latest environment & energy news, green-IY projects, animal stories & more (contact: huffpostgreen@huffingtonpost.com)96,949 followers | Follow
Live Earth
Leveraging the power of entertainment through integrated events, media and live experience. Join the global movement to help solve critical environmental issues95,492 followers | Follow
350 dot org
Join a global movement that's inspiring the world to rise to the challenge of the climate crisis. 350=safe upper limit of CO2 in atmosphere. Photo by @julkosch95,368 followers | Follow
National Wildlife
National Wildlife Federation works to inspire Americans to protect wildlife for our children's future. Staff updating: @starfocus @rarewildlifeguy @ksuzj89,274 followers | Follow
PlanetGreen.com
PlanetGreen.com offers practical, everyday tips on how to live a greener lifestyle. We offer actionable advice across a variety of topics: green made real.87,700 followers | Follow
Sea Shepherd
The Official Twitter page of Sea Shepherd Conservation Society. Defend. Conserve. Protect.86,803 followers | Follow
Guardian Environment
Green news, comment & more, run by the environmentguardian.co.uk team, inc @james_randerson & @adamvaughan_uk & @dpcarrington86,457 followers | Follow
Michael O'Loughlin
We produce the Pacific Northwest's largest sustainable lifestyle festival - Better Living Show. We do Green Events #2012BLS78,681 followers | Follow
Earth Hour
Dare the World to Save the Planet - Create an I Will If You Will challenge to take your action beyond the hour.76,987 followers | Follow
Discovery_News
DiscoveryNews.com, a Discovery Channel website that covers the latest science news on tech, gadgets, animals, space, adventure, autos, history and earth.74,712 followers | Follow
Met Office
The official UK Met Office account for weather and climate information, news and jobs. Follow @metofficeUK for weather warnings.70,232 followers | Follow
NYT Green Blog
Green: A Blog About Energy and the Environment from The New York Times63,629 followers | Follow
Recyclebank
Recyclebank rewards you for taking everyday green actions with discounts and deals from local and national businesses. http://www.facebook.com/recyclebank58,425 followers | Follow
Greenpeace USA
Saving the planet for 40 years. @meenazahra & @chr15_eat0n here, Tweeting for a green & peaceful future.56,084 followers | Follow
Waylon Lewis
http://bit.ly/1VeAh0 MNN:Top10Green; Treehugger:Cultre&CelebEcoAmbssdr; Discovry:Chngemkr; PlanetGreen:GreenHero; ShambhlaSun:ProminentBuddhst; 5280:TopSingle.53,364 followers | Follow
MotherNatureNetwork
Environmental news, local foods, innovations, and green inspiration53,026 followers | Follow
Michael Sprague
Water holds a kind of magic. It calms us. It lifts us. Ultimately it sustains us.50,140 followers | Follow
Jerry James Stone
Love food, wine and cars! 2012 @ShortyAwards winner in #green. @ClineCellars Chef. Byline at @Discovery, @TreeHugger. Tweets are green, geeky or just plain odd.46,632 followers | Follow
Friends of the Earth
We see the wellbeing of people and planet as one and the same. This inspires our campaigns on climate, energy, wildlife and living within the planet’s limits.42,783 followers | Follow
Earth Institute
Mobilizing the sciences, education and public policy to achieve a sustainable earth36,745 followers | Follow
Earth News
Wildlife, Nature, Science & Environment news from around the world. 'No 1 environmental news Twitter' - The Guardian + BBC news Live Updates.36,236 followers | Follow
Andy Revkin
Pursuing progress on a finite planet on http://j.mp/dotEARTH and at Pace U. The rest? Family, friends, living, music: http://j.mp/unclewade35,409 followers | Follow
Eco Preservation Soc
Eco Preservation Society: Conservation, Reforestation and Education. We bring it together. Get conected, Get Involved, Make a difference.33,739 followers | Follow
The Ecologist
The Ecologist - setting the environmental agenda since 1970. Like us on facebook: http://www.facebook.com/TheEcologist33,528 followers | Follow
Lee Hiller-London
✡ PhotoPoet Married 2 My Beloved @RickLondon | Vegan | Author The Nature Of Love | Lover Poet Hiker Photographer HikeOurPlanet.com | A Blonde with a Brand :o) ✡31,774 followers | Follow
Stacy Kinney
Social Media Marketing & Personal Branding, Real Estate Investor & Eco Friendly Gal. Driven to succeed & help others. Wine lover. Attitude of gratitude!31,696 followers | Follow
Kate Sheppard
Reporter at Mother Jones covering energy, environment, reproductive rights, etc. Contributor with Current's Countdown. Also like: running, bikes, books.29,131 followers | Follow
The Oil Drum
A web-based/interactive energy, peak oil & sustainability research and news site; hosted by the nonprofit 501c3 Institute for the Study of Energy and Our Future28,929 followers | Follow
National Zoo
The Smithsonian's National Zoo demonstrates leadership in animal care, science, education, and sustainability.27,836 followers | Follow
Climate Progress
Blog dedicated to providing the progressive perspective on climate science, climate solutions, and climate politics.27,465 followers | Follow
Sustainable Cities
We are a community of bloggers promoting civic sustainability and urban environmentalism. Join the conversation!26,597 followers | Follow
Green For All
Green For All is a national organization working to build an inclusive green economy strong enough to lift people out of poverty.26,030 followers | Follow
Rainforest Alliance
International nonprofit organization working to conserve biodiversity and ensure sustainable livelihoods25,770 followers | Follow
Mother Earth News
The Original Guide to Living Wisely: Organic Gardening, Homesteading, Renewable Energy, Sustainable Food & Farming, DIY, Green Homes, Natural Health & More24,908 followers | Follow
NYC Parks & Rec.
New York City Department of Parks & Recreation is the agency responsible for NYC's public parks and recreational spaces.24,804 followers | Follow
Yale Environment 360
Opinion, Analysis and the Latest Environmental News - A Publication of the Yale School of Forestry & Environmental Studies.23,960 followers | Follow
Waterkeeper Alliance
The Voice for the World's Waters. (Our follows are not endorsements.)23,355 followers | Follow
RayBeckerman
Law, social justice, nature, human & animal rights, the arts, ecology. Progressive. I try to lend my voice to the voiceless. http://is.gd/cNFKN22,388 followers | Follow
Conservation Intl
Conservation International - an environmental organization working with partners in 40 countries around the globe to protect nature for the benefit of people.21,067 followers | Follow
CERC_Columbia
Center for Environmental Research and Conservation - Undergrad Abroad Programs; Executive Education Classes and Certification; Teacher Training; K-12 Education20,907 followers | Follow
David Roberts
Seattleite transplanted from Tennessee; now blogging for Grist about energy politics. Climate hawk, deficit dove.20,603 followers | Follow
NYTimes DotEarth
NYTimes.com/DotEarth is Andrew C. Revkin on Climate Change and Sustainable Living20,462 followers | Follow
Erik van Erne
Green Sustainable News: earth climate renewables water cradle to cradle c2c - nieuws blogger communicatie pr social media en oranje fan http://bit.ly/fqDgUQ20,455 followers | Follow
The Audubon Society
The original tweeters. People working together to protect birds, other wildlife and the natural resources that sustain us all, since 1905.19,552 followers | Follow
Melissa Dion
Please also follow @ecolissa. Owner of Ecolissa.com which sells fashionable eco friendly & vegan clothing! I love yoga, running, reading, movies, & sudoku.19,387 followers | Follow
J McIntire-Strasburg
Blogging a Greener World since 2003. The J is Jeff...19,339 followers | Follow
chelseagreen
Book Publisher focused on the Politics and Practice of Sustainable Living. Also tweeting on @greentweet.18,911 followers | Follow
PBS Nature
Wednesdays at 8PM on PBS (check local listings). Tweets by the NATURE team.18,690 followers | Follow
EarthIslandInstitute
Earth Island Institute grows environmental leadership to support the biological & cultural diversity that sustain the environment18,640 followers | Follow
EcoTweetHub&FBGroup
Created by @mqtodd in Dec 2009 we are a hub for connecting & promoting eco people. Use #ecomonday #waterwednesday & #thAIRsday. Join our FB group !18,586 followers | Follow
Defenders Wildlife
Defenders of Wildlife leads the pack when it comes to protecting wild animals and plants in their natural communities.18,071 followers | Follow
Danielle Brigida
I work for the National Wildlife Federation (@NWF). I’m looking to learn & laugh. Interests include: nature animals nonprofits social media technology and life!17,866 followers | Follow
Greenopolis
Helping people make small, incremental eco-friendly changes in their lives.17,396 followers | Follow
NYTimes Environment
Breaking news and environmental news on the EPA, oceans and marine life, weather, wetlands, pollution, wildlife, global warming, hybrid cars, energy and nature.16,875 followers | Follow
Enivronment Updates
Get a worldwide survey of scientific and political environmental news. Re-tweet if you want.16,070 followers | Follow
350.org USA
U.S. organizing from 350.org. Join a global movement that's inspiring the world to rise to the challenge of the climate crisis.15,953 followers | Follow
The Energy Collectiv
The world's best thinkers on energy and climate issues. Register for newsletter, webinar access and ebooks. http://ow.ly/4Rr1m15,899 followers | Follow
David Connor
Better business / CSR / sustainability / social enterprise believer. Founder @Coethica - http://www.coethica.com. Undisciplined runner.15,596 followers | Follow
EtsyEarthTeam
EARTH FRIENDLY HANDMADE GOODS! A team of ETSY sellers making well-balanced eco choices w/safety & quality in mind! Newly listed items http://etsy.me/uLtf0915,574 followers | Follow
Ocean Conservancy
Ocean Conservancy educates and empowers citizens to take action for our ocean, bringing people together to find science-based solutions for our water planet.15,237 followers | Follow
Barbara Matthiessen
wife, mom, artist, dog lover not necessarily in that order15,166 followers | Follow
Climate Desk
A journalistic collaboration dedicated to exploring the impact—human, environmental, economic, political—of a changing climate.14,941 followers | Follow
Eppo Numan
Aiming to fly the 1st. #PoweredParaglider around the world, to promote a #Universal #Declaration on #Animal #Welfare and #Sustainable #Solutions Providers14,696 followers | Follow
Green Celebrity News
Love good news? Small talk about famous humanitarians, charity causes, pet friendly celebs, green celebrities, ecofriendly gossip, Hollywood lifestyle reviews.14,313 followers | Follow
Misty Wuori
Marketing Chic & Writer | #TweetTarts | Happy~Positive~NatureGirl, embracing my Ness ♥Sunsets & my Rescues, friend to Earth & Animals ☼Li√eGreen & Prosper☼13,930 followers | Follow
Liza de Guia
Founder & Chief Storyteller of FOOD CURATED. Food addict & on-air host. I love meeting people & telling stories about the passion behind the food movement.13,703 followers | Follow
Derek Markham
Generally green, sprinkled with randomness & slathered with peanut butter. Writer for TreeHugger.com and Discovery. Good man. Skilled shoveler. WordPress lover.13,397 followers | Follow
Michelle Desilets
Founder of Orangutan Land Trust and Borneo Orangutan Survival UK. Saving orangutans for 18 years. Forests for Orangutans. Forever.13,390 followers | Follow
Worldchanging
Hi. We are back. In November we will begin to blog and in the spring we will merge with the @openarchnetwork13,090 followers | Follow
Liz McLellan
owner hyperlocavore.com - a yardsharing community. Let's grow together! Foodie, gardener, crafty nerd and hot-headed ginger. http://ow.ly/acvWq12,186 followers | Follow
Kelly Drennan
ECO fashion evangelist, PR & Events Expert, Non Profit Founder & ED of @FTAorg. Tweet energy, h2o, toxins, CSR, fairtrade. Writer Speaker, Green Mom, Yogi12,020 followers | Follow
Yahya E. B. Henry
REALTOR® / developer | entrepreneur | consultant | passion for cities & ideas11,751 followers | Follow
FrackingTestSubject
Mom, Artist, I would love to see a peaceful green earth, with respect for all living things. I tweet, ecology, art, world peace and photography.11,714 followers | Follow
David Hood
Optimist Instigator Facilitator Explorer. Connect people, organisations & big ideas at @DoingSomeGood Cocreate better futures with @WeGatherHere & #CollabMelb11,448 followers | Follow
Richard Black
Environment Correspondent for BBC News: climate & conservation, forests & fisheries, whales, frogs, energy & nukes - all with a global feel11,392 followers | Follow
helpthebees
Raising awareness of the plight of bees and what we can do about it. Wildlife lover, enjoy wildlife gardening & interested in environmental issues.11,376 followers | Follow
CalAcademyofSciences
Explore an aquarium, planetarium, and natural history museum all under one living roof.11,342 followers | Follow
ZEROGreenhouse
Founder/Chair-Greenhouse Neutral Foundation, Author Zero Greenhouse Emissions http://bit.ly/17b0u6 also @Bob_Williamson11,338 followers | Follow
Solar Sister
Light. Hope. Opportunity. Using the power of women's enterprise to distribute clean energy technology in rural Africa.11,269 followers | Follow
dusty gedge
biodiversity professional, green roof campaigner/designer,public speaker, ecosystems services and green roof trainer - indigenous people + justice11,268 followers | Follow
David Quilty
Founder of thegoodhuman.com. Social activist, greenie, writer, social media addict, forkoverknifer. You'll find me outdoors trying to avoid looking at my phone.11,199 followers | Follow
Blue Planet Society
Campaigning to stop overfishing and to protect marine life11,032 followers | Follow
Global Alert
Global alert for climate, animals, oceans, wildlife, plastic bags, politic... Reduce, Reuse, Recycle. STOP plastic bags! Plant a tree! Hosted by @afmiziara11,010 followers | Follow
Cindy FrewenWuellner
architect, futurist, urban designer, rhetorician, adjunct prof, treehugger, former biz owner now a writer/analyst exploring city futures, reborn from @cindyfw.10,983 followers | Follow
Rocky Mountain Inst
Founded in 1982, Rocky Mountain Institute is a research and consulting non-profit that drives the efficient and restorative use of resources.10,834 followers | Follow
Damian Grounds
- In my spare time I've set-up Help Save Bees to help raise awareness and to donate money towards research and conservation work to help save bees.10,794 followers | Follow
Rohaan Solare
Making Sense of the Planetary-Human Condition; Nurturing the Emergent Culture Movement, Demystifying the Past, Unraveling the Present, Anticipating the Future10,202 followers | Follow
Fabien Cousteau
Eldest grandson of Jacques Yves Cousteau, Fabien continues the legacy and mission of exploration, media production, environmental advocacy and plantafish.org10,142 followers | Follow
Solargroupies
Glenn Fay, Jr. LoveEarthAlways.com photography, nature, wellness, clean energy and common sense. Facebook.com/LoveEarthAlways and /Solargroupies10,017 followers | Follow
Scripps Oceanography
Scripps Institution of Oceanography is one of the oldest, largest, and most important centers for marine science research, graduate training, and public service9,966 followers | Follow
Stephanie Hicks
Freelance travel blogger, marathon runner, lawyer, photographer, mom of 4, & Type1 diabetic Tweets on environment, fitness/health, travel & solar power9,933 followers | Follow
Sergio Abranches
Political analyst. Ecopolitics. Writer. CBN Radio commentator. Blogger.9,791 followers | Follow
AlexSteffen
I think, write and speak about how to live well and be a good ancestor... (pls note, I'm not able to answer all individual research queries or comments).9,607 followers | Follow
Shea Gunther
I'm a Mainer, a dad, a blogger for MNN, a founder of #EcoMonday, and ultimate frisbee player. I'm back at school studying environmental and computer science.9,588 followers | Follow
Leslie Quigley
treehugging, feminist, hippie mama, wifey, domesticated eco gal and urban gardener! nature, health foodie, + yoga addict. peace, love & green happiness :)9,540 followers | Follow
Chris Baskind
Founding editor of Lighter Footstep (now part of Mother Nature Network/MNN). Carfree advocate, coffee drinker, and sometimes geek.9,223 followers | Follow
Bethe Almeras
Writer, blogger, educator, speaker, advocate, BIG KID. The Grass Stain Guru: Believer in the power of play, nature and laughter. Um, and relentless dork.9,190 followers | Follow
William McDonough
William McDonough is a designer, architect and co-author, with Michael Braungart, of Cradle to Cradle and The Hannover Principles9,175 followers | Follow
CBD-Cntr for Bio Div
The Center works through science, law, and creative media to secure a future for all species, great or small, hovering on the brink of extinction.9,125 followers | Follow
Mike Lieberman
I give practical container gardening tips to grow your own food so you can avoid toxic pesticides, eat healthier and not feel limited by your lack of experience9,037 followers | Follow
Tar Sands Action
Joining together to stop the dirtiest project on earth with civil disobedience.8,990 followers | Follow
Bryan Walsh
senior editor for TIME International, & enviro blogger. RTs are not automatically approvals. Usually context helps.8,660 followers | Follow
tony serve
husband, father, broadcaster, journalist, teacher, social justice activist. http://perthtones.net *warning, some graphic content. RTs not endorsement8,642 followers | Follow
George Dearing
Eco-minded father & techie journo-type @DearingGroup @AustinStartup / #Cleantech & #CSR advocate, occasional technologist, disruptor. #green #austin #tech8,529 followers | Follow
Dr. Paula Kahumbu
Champion of endangered species, ecologist, conservationist, childrens book author, CEO of WildlifeDirect Inc8,467 followers | Follow
Eco Shoe Source
Eco-preneur & host Green Ar Live! I am committed to promoting eco friendly and vegan friendly high-fashion footwear. Shoes can change your life, ask Cinderella!8,457 followers | Follow
Lis Duarte
8,447 followers | Follow
Orion magazine
America's best environmental magazine (according to the Boston Globe).8,379 followers | Follow
Amazing Species
Regular factsheets about threatened species, brought to you by the IUCN Red List of Threatened Species.8,369 followers | Follow
Civil Eats
A site that promotes critical thought about sustainable agriculture and food systems as part of building economically and socially just communities.8,162 followers | Follow
Sandy Guerriere
Author & Writer - Supportive force in the lives of others. Organic health for a healthy planet.8,146 followers | Follow
Leafygreen.info
Green Reviews. -- organic, all natural reviews, vegan, vegetarian reviews, healthy, eco-friendly, sustainable, recycled, food, clothing, beverage, eco-friendly!8,041 followers | Follow
High Country News
An independent news magazine for people who care about the West's environment and people, publishing online and in print media.7,645 followers | Follow
Worldwatch Institute
Global environmental research organization focused on building a low-carbon energy system, creating a healthy future for agriculture, and developing a green eco7,397 followers | Follow
L.A. Times Green
News about environmentally friendly living from @latimes. See @LATenvironment for more green news.7,291 followers | Follow
Wendy Gabriel
Living Green and trying my best to figure it all out...being a wife, mother and human being. Also writes for 1800Recycling.com.7,222 followers | Follow
Fauna & Flora Int.
Fauna & Flora International is conserving the planet’s threatened species and ecosystems – with the people and communities who depend on them.7,213 followers | Follow
Susan McPherson
Passionate connector who tweets about global innovation, social entrepreneurship, CSR, causemarketing, fundraising, engagement strategies & hosts the #CSRChat7,175 followers | Follow
Bonnie Cranmer
Passionate about life and not afraid to speak my mind, green social media enthusiast, simple over chaos! #RAOK each day ;~) Love, Peace & Magic!7,141 followers | Follow
RarePlanet
Rare is an international NGO that designs community-based solutions to global conservation challenges. Conservation is about people.7,135 followers | Follow
Sylvia A. Earle
Oceanographer, National Geographic Explorer-In-Residence, 2009 TED Prize Winner. Dedicated to saving and restoring the ocean, the blue heart of the planet!7,102 followers | Follow
John Peter Thompson
Ask me your questions - Sustainability, ecosystems invasive species,natural philosophy, history, politics & current events explained7,044 followers | Follow
Hopenhagen
Hopenhagen is a community striving to lead our leaders to make the right decisions at the UN Climate Change Conference in Copenhagen, Denmark, December 2009.6,912 followers | Follow
NRDC Switchboard
This is a feed of posts from NRDC's staff blog, Switchboard. Follow @NRDC on Twitter for more updates.6,842 followers | Follow
Lynn Hasselberger
I Count for myEARTH. Blog + tweets 2 raise awareness + inspire change 4 people + planet. Tweets by founder @LynnHasselbrgr who also tweets 4 her biz @myEARTH3606,822 followers | Follow
Allison Arieff
Opinionator columnist, the New York Times; SPUR's Urbanist Editor; also write on design for The Atlantic Cities. Backyard farmer, former EIC of Dwell.6,816 followers | Follow
Franke James
Artist & author of Bothered By My Green Conscience | Who cares about the Forest? | Six Tools for Climate Change Art + more...6,800 followers | Follow
Ocean Champions
The only political voice for the ocean. We help elect pro-ocean candidates & work with them to drive great ocean policy. Tweets from Mike, Chris & the crew.6,605 followers | Follow
Nathan A. Winters
Upcoming author | Restorative farming | Farmer @rellybubfarm | Former digital media evangelist turned simple/ rural living advocate | Mean cook | Optimistic6,544 followers | Follow
1% For The Planet
1% for the Planet is an alliance of 1,400+ businesses that commit 1% of sales to environmental groups around the world. The vid!.. http://bit.ly/1pctfilm6,530 followers | Follow
Mireya Mayor, Ph.D.
Host of Nat Geo Wild, Explorer/Wildlife Expert Expedition Africa,Author Pink Boots & A Machete,Emmy Nominated Reporter, Speaker & Former NFL Cheerleader6,497 followers | Follow
Suzanne / ByDezin
Co-Founder of SEN4Earth ~ SEN4Earth.org/articles, Exec Dir~Greenhouse Neutral Foundation.org ~Creator of NOdorz ~REduce ~REuse ~REnew ~REcycle6,484 followers | Follow
Dennis Schvejda
Former NJ Sierra Club Conservation Director... advancing conservation & protecting the environment via social media.6,444 followers | Follow
Hildy Gottlieb
Activist, writer, connector, explorer. TEDx speaker http://ow.ly/8L8vG Adding rocket fuel to social change.6,420 followers | Follow
Osha G. Davidson
Freelance writer/photographer, author, & Sonoran desert rat. Current project: What the US can learn from Germany's renewable energy economy. Member, SEJ.6,312 followers | Follow
Michael Pata
Entrepreneur, Animal Enthusiast, Social Media, Sustainability, Wildlife, Pets, Environment, Aquaculture, Fun6,294 followers | Follow
Durrell Wildlife
Durrell Wildlife Conservation Trust is an international charity working globally to save species from extinction.6,227 followers | Follow
The Cove News
Real-time news feed for @TheCoveMovie. Track who and where people are talking about The Cove, Taiji and Preserving Our Oceans.6,208 followers | Follow
Dr Wallace J Nichols
#LiVBLUE: ocean scientist-activist-traveller-writer-dad LiVBLUE: live like you love the ocean6,131 followers | Follow
Mission Blue
Mission Blue is a global partnership initiative to raise public awareness and move people to help protect this vital natural resource.6,111 followers | Follow
TheEnvironmentSite
An environmental portal with the largest environmental and green living forum on the web.6,020 followers | Follow
The Earth Times
The Earth Times covers environmental news topics and environmental issues. Visit us at www.facebook.com/TheEarthTimes5,980 followers | Follow
Colin Beavan
I'm the author of No Impact Man. I'm a writer, activist, speaker and now candidate for Congress!5,869 followers | Follow
Carbon Outreach
Traditional & Digital Marketing for Ethical Business | Our 200+ Page Facebook Guide http://amzn.to/vz3dSZ5,630 followers | Follow
Wildlife Watch
Wildlife Watch is a program for National Wildlife Federation. We're interested in wildlife and citizen science. If you spot wildlife put #nwf in your tweets!5,556 followers | Follow
Circle of Blue
Reporting the global freshwater crisis. Publishes #WaterNews, the daily go-to source for global water news and data.5,547 followers | Follow
Caitlin Fitzsimmons
Freelance journalist and travel blogger who has lived and worked in Sydney, London and San Francisco.5,539 followers | Follow
The TEEB Study /UNEP
United Nations Env. Program hosts TEEB: The Economics of Ecosystems & Biodiversity +500 scientists, policy, business & citizens report the value of nature.5,493 followers | Follow
M Sanjayan
Lead scientist at @nature_org & global conservationist. TV host, @CBSNews contributor, writer, flyfisher & explorer. Trying 2 live in Montana. Tweets=my own.5,398 followers | Follow
Michael Noble
Clean energy, climate and transportation leader, organizing constituencies, policy strategy & philanthropy. CEO Fresh Energy & Publisher MidwestEnergyNews.com5,296 followers | Follow
britesprite
Leading Sustainability Journalist & Writer, including for The Guardian. Personal tweets on #green #business #humanrights #csr #sri and bundles of other stuff.5,192 followers | Follow
Gregg McLachlan
Founder, CPRW, WorkCabin.ca, Canada's eco-focused Environmental Jobs Site. Boots-on-ground conservationist. Life rocked by nature & wildlife. @GreggMcLachlan5,122 followers | Follow
WWF Arctic Programme
Since 1992, the WWF Global Arctic Programme has been working to preserve the Arctic's rich biodiversity in a sustainable way.5,011 followers | Follow
Tor Valenza
Tor Valenza aka Solar Fred simplifies solar marketing/PR at UnthinkSolar.com. Read SolarPowerRocks.com and for Solar Biz People @REWorld http://ow.ly/ap7wl4,985 followers | Follow
Lisa Vickers
Ecocentric activist. Global Campaigner @Avaaz. Usually tweeting about environmental, social and political change & my dog. Opinions are only mine.4,982 followers | Follow
Halo Efekti
Finnish environmentalist - blogger, newshound, snapshot photographer. Advocating human rights, free speech & sustainability. Wikileaks & OWS supporter. Rebel4,976 followers | Follow
Stacey Murphy
BK Farmyards is a collective of urban farmers dedicated to expanding social justice and agricultural production in Brooklyn4,941 followers | Follow
Rachel Armstrong
Senior TED Fellow, Interdisciplinary researcher inhabiting art/science/architecture4,898 followers | Follow
David Biello
News is what somebody somewhere wants to suppress; all the rest is advertising: Lord Northcliffe Me: Environment & Energy editor @sciam. All views my own4,850 followers | Follow
Meredith Modzelewski
TAURUS: You've always believed you should go with your gut, which is why every major decision in your life has been accompanied by chili-cheese fries.4,765 followers | Follow
Green Meme
Latest environmental news headlines from news sources and organisations around the web (live feeds).4,721 followers | Follow
Kathe Garbrick
animal welfare, environment, sustainability, social justice, locavore, slow food, gardening, lgbt, atheist; all things cat4,711 followers | Follow
Ecological Society
The Ecological Society of America is a nonprofit organization founded in 1915. Check back for EcoTone blog posts, ESA updates, podcasts, and more!4,663 followers | Follow
Columbia Water Centr
Columbia Water Center, Earth Institute, Columbia University: Mobilizing the sciences, education, and public policy to reduce water scarcity around the world.4,645 followers | Follow
Tyndall Centre
Scientists, economists, engineers, who together are working to develop sustainable responses to climate change4,638 followers | Follow
Friends of the Earth
Friends of the Earth International is the world's largest grassroots environmental network. We campaign on today's most urgent environmental and social issues.4,619 followers | Follow
Darryl Lombard
International consultant on tourism product conceptualisation, Strategic Tourism Master Planning, project feasibility assessment and tourism-driven LED.4,604 followers | Follow
Cradle to Cradle
This is the official page for Cradle to Cradle, a registered trademark of MBDC. MBDC is a consulting firm that helps clients go beyond sustainability.4,515 followers | Follow
Edward Virtually
Over the hill idealistic left-wing ex-superuser with a very ranty blog.4,445 followers | Follow
ConservationMagazine
Cutting-edge independent science journalism- big ideas and bold solutions to tough environmental problems4,406 followers | Follow
Suzanne Goldenberg
Guardian's US Environment Correspondent, recovering war reporter4,384 followers | Follow
Mark Lynas
Author of 'Six Degrees', 'High Tide' & 'The God Species'. Climate advisor to former Pres Nasheed of Maldives, visiting research assoc at Oxford University.4,358 followers | Follow
Victoria Kamsler
Ex-Princeton environmental ethicist, Co-founder of Skybase (@solarflight), Chief Research Officer at Katerva (@katerva)4,259 followers | Follow
Alan Nogee
Clean energy consulting. Former Union of Concerned Scientists Clean Energy Program Director. Tweeting on renewable energy, coal, nuclear, climate.4,258 followers | Follow
One World One Ocean
One World One Ocean is a nonprofit campaign that is harnessing the power of film, television and new media to spark a global movement to save the ocean.4,245 followers | Follow
NRDC's NY Media Team
Follow us (Kate, Jenny, & Jackie) for the latest news highlights from NRDC & the enviro world. For the org acct follow @NRDC or check our NRDC twitterers list4,237 followers | Follow
Bethany Meneses
Licensed Architect in Florida, LEED AP, orginally from Maine, RWU alumni, I love cats, LOST, the Red Sox, reading, & movies, amateur photographer, very liberal4,232 followers | Follow
Marnie Glickman
Managing Director of the Green Party of California @gpca & Montessori mom4,188 followers | Follow
Project Noah
Mobilizing a new generation of nature explorers. Share your wildlife encounters and help document our planet's incredible biodiversity.4,179 followers | Follow
A Sea Change
Imagine a world without fish. We don't want to, so we made this film, about the evil twin of climate change: ocean acidification.4,111 followers | Follow
US Forest Service
Hi friends! I’m Cheecker, here to teach you how to get outdoors and discover the forest. Find me at www.facebook.com/discovertheforest, too!4,010 followers | Follow
Judith Kingsbury
Go Veg To Go Green! Curious talkative new-age hippy grandma. 40 yr veg, cook, gardener, yogini, supporting veggies with recipes, advice, articles, blogs3,994 followers | Follow
Audubon Magazine
3,981 followers | Follow
Peter Gleick
Co-founder Pacific Institute; climate/water scientist; member National Academy of Science, MacArthur Fellow; author of Bottled and Sold. My tweets are my own.3,967 followers | Follow
Paul Jimerson
Artist, Photographer, Environmentalist, Psychotherapist, Former Radio Personality, Animal Hugger, Ocean lover3,821 followers | Follow
Karen Maskall
I am a Social Entrepreneur and Founder of Pledging for Change. P4C shares revenue, plants trees, gives grants and promotes ethical business and green living3,754 followers | Follow
Kate Martin
Purveyor of Groovy News. ~ I could not,at any age,be content to take my place by the fireside and simply look on.Life was meant to be lived. ~ Eleanor Roosevelt3,745 followers | Follow
CGIAR Climate
The CGIAR Research Program, Climate Change, Agriculture & Food Security (CCAFS) seeks to overcome the threats to ag & food security in a changing climate.3,695 followers | Follow
Natural Papa
Tweeting about natural & attachment parenting and fatherhood - want more diversity, follow @DerekMarkham3,686 followers | Follow
AboutInsects
Naturalist, writer, gardener, former classroom teacher, photographer, and bug freak.3,673 followers | Follow
The 1010 Project
We partner with business and community leaders to break the cycle of poverty. The 1010 Project connects resource with need in the context of friendship.3,619 followers | Follow
Sandy Guerriere
Green Eco Communities - Sustainability of the Planet begins at home. ~ Become the change you want to see in the world.3,610 followers | Follow
Molly Cantrell-Kraig
Articulate whimsical gal w/focus on green sustainable biz I tweet eco haiku media sm vegan socent poetry & the occasional girly update! Also founder of @WWDr1ve3,607 followers | Follow
SeaWeb.org
SeaWeb is an international, nonprofit, communications organization dedicated to creating a culture of ocean conservation.3,592 followers | Follow
Fiona Harvey
3,590 followers | Follow
Lori Tripoli
Freelance writer & editor covering green biz, sustainability, climate change, green travel, enviro law & policy; unintimidated but able to laugh at anything3,505 followers | Follow
Petunia GreenBeans
Mommy, wife, guitar lover. CEO of my GreenBeans Dreams. Follow my random acts of Tweetness:) On Facebook? http://facebook.com/GoGreenBeans3,344 followers | Follow
Bob Williamson
Founder/Chair-Greenhouse Neutral Foundation, Author Zero Greenhouse Emissions http://bit.ly/17b0u6 also @ZEROGreenhouse3,235 followers | Follow
Karen Wilde
Bushcraft, nature, playoutdoors and outdoor living enthusiast. Oh, and I write a bit. Pays the bills: http://wildelycreative.com3,210 followers | Follow
Wyland Foundation
Providing environmental education programs & public art projects that promote preservation of the world's ocean, waterways & marine life.3,179 followers | Follow
Orion Grassroots
We track grassroots efforts to make ecological, social, and cultural change worldwide. A project of Orion magazine.3,169 followers | Follow
James Hoggan
Author of Climate Cover-Up, Co-Founder of DeSmogBlog, Chair of the David Suzuki Foundation, President of Hoggan and Associates3,113 followers | Follow
Earth News ReTweeted
A ReTweet wildlife & environment news service associated with @Earth_News3,035 followers | Follow
Nigella Hillgarth
Executive Director, Birch Aquarium at Scripps; committed to the future of our Ocean, our Planet2,997 followers | Follow
Rosie Emery
Producer/Writer/Director WGCUs Emmy-nominated Curious Kids TV Show! Grew up in Sherwood Forest! Singer/Songwriter/Env/Educator! Grateful!2,965 followers | Follow
Conservation Letters
Fast, global and policy-relevant, Conservation Letters is an online-only scientific journal publishing research with significant implications for conservation2,960 followers | Follow
Riverkeeper
NY's Clean Water Advocate-Defending the Hudson River & protecting the drinking water supply of nine million New York City & Hudson Valley residents.2,928 followers | Follow
DiadaTerra
Concerned about climate change from Mother Gaia, Global Warming, with the greenhouse effect - globalwarming - climatechange -2,882 followers | Follow
EDGE of Existence
The EDGE of Existence programme highlights extraordinary species that are on the edge of extinction and works to save those forgotten by others.2,876 followers | Follow
Charles Edouard
an open-minded ecologist, father, european, active in H.R.Services2,871 followers | Follow
NYC Bike Share
NYC bike share will launch with 10,000 bikes and 600 stations this summer. Follow us and @NYC_DOT for regular updates!2,841 followers | Follow
Rick Lieder
Art+Science=Cool • Painter | Photographer | Illustrator • Portraits of the Wild World2,821 followers | Follow
Crackers the Parrot
I'm on a mission to bring awareness to and help save the rainforest. Will you help me?2,751 followers | Follow
Jorge Salazar
Science journalist and broadcaster - EarthSky, a clear voice for science2,747 followers | Follow
Connected by Nature
exploring the connections between cities, people, and environment. Tweets by Ken Lo (@kennethlo)2,739 followers | Follow
Allie Wilkinson
Founder of @lookslikesci & freelance science communicator. Member of SEJ, NASW, SCB2,735 followers | Follow
InhabitatNYC
2,726 followers | Follow
Larry Oliver
#climatehawk #climatecrisis #water #watercrisis Warning! High Volume2,679 followers | Follow
NEEF - environment
The National Environmental Education Foundation: Knowledge to live by.2,604 followers | Follow
Erica Gies
I am a reporter who covers the environment, especially energy and water. In my spare time, I like to travel and to garden. Member, SEJ.2,597 followers | Follow
Fabien Cousteau
Stimulating marine education and restoration initiatives around the world.2,543 followers | Follow
Martin Kumquat
Wildlife, environment, gardening, computers, sustainability, human rights, friends, food. And that's how this Kumquat rolls.2,526 followers | Follow
Hilary Maybaum
Science writer and editor, non-practicing oceanographer, one-time Alvin diver, hiker, kayaker, crossword puzzler, candy eater2,517 followers | Follow
Toxic Soup
Doc film about everyday folks fighting to protect their air, water & blood from pollution ft. @billclinton, @RFKjr + @jennyfrommtv. As seen on @freespeechtv2,487 followers | Follow
Green Drinks NYC
Lively business and social networking events for the green community in NYC, every month since 2002!2,388 followers | Follow
Kevin Songer
Hurricane #GreenRoofs Consultant, Nature Irrigated, Wildflowers & Natives- Urban Rooftop Gardens, Permaculture & Eco-Lawyer w Marfans Syndrone2,386 followers | Follow
Moving Planet
Wherever you are, come be a part of a huge global rally to demand action on the climate crisis.2,338 followers | Follow
Dul Machin
So Cal web designer, music freak, political junkie, Dodgers/Lakers fan, SL enthusiast & a donkey.2,331 followers | Follow
Earth Island Journal
Quarterly journal dedicated to investigative journalism about environmental issues.2,286 followers | Follow
Angela Canova
To increase ridesharing & reduce single-occupant vehicles, improving the quality of life as environmental stewards. Rideshare operates the Easy Street vanpo2,242 followers | Follow
Dvija M Bertish
Environmentalist, Political Junkie, Artist, Volunteer, Friend of Animals, Dog Lover, Water Quality Specialist, #Water, #Eco, #Sustainability, #Enviro, #Green2,181 followers | Follow
Wendee Holtcamp
award-winning freelance writer * lover of nature * bohemian * photographer * mover-n-shaker * single mom of 2 smart cookies * seeker of truth & wisdom2,116 followers | Follow
DeLene Beeland
Independent science writer atwitter about nature and the great outdoors. Author of The Secret World of Red Wolves (UNC Press; 2013).2,115 followers | Follow
Climate Change
Climate change refers to any significant change in measures of climate (such as temperature, precipitation, or wind) lasting for an extended period.2,113 followers | Follow
Kelly Senser
Nature-loving mom with passion for wildlife gardening, photography and outdoor play. Program manager at National Wildlife Federation.2,050 followers | Follow
Holise Cleveland III
“A time comes when silence is betrayal.”–MLK Jr | “To me, you’re either an activist or an inactivist.” – Louie Psihoyos #Vegan #CyberWhaleWarrior2,028 followers | Follow
Gwendolyn Bounds
Host WSJ's Lunch Break & Off Duty shows. Ruralpolitan working in NYC living in country. Summertime I eat what I grow. Author: Little Chapel on the River.2,003 followers | Follow
American Forests
The nation's oldest conservation nonprofit, dedicated to growing a healthier world by planting & protecting trees and forests around the globe.1,996 followers | Follow
One Change
One Change is a grassroots organization that empowers people to believe that simple actions matter and to make smart choices that protect the environment.1,944 followers | Follow
Eric Laczi
My Interests Include: wildlife, nature, trees, coffee, beer, supporting local businesses, photography & I love Kentucky basketball. Go Big Blue! #BBN #WeAreUK1,852 followers | Follow
Climate_Action_Org_
Working in partnership with the United Nations Environment Programme to assist businesses, governments and NGOs in environmental sustainability.#COP17 #Durban1,789 followers | Follow
Sarah Emily Labance
Ph.D. in environmental engineering (PSU '02); science/environmental/political writer; activist; sports fanatic1,752 followers | Follow
Will Steger
Polar explorer, educator, author, environmentalist, climate change activist. Twitter managed by Will Steger Foundation.1,643 followers | Follow
Island Press
Since 1984, Island Press has been a trusted source of environmental information and solutions.1,619 followers | Follow
Women in the Dirt
a film about 7 groundbreaking landscape architects. Their work ranges from intimate gardens to vast urban projects. Art + science + sustainability = beauty.1,618 followers | Follow
LES Ecology Center
Composting. Electronic Waste Recycling. Stewardship. Education. Offices in the Lower East Side. Programs throughout the great five boroughs.1,618 followers | Follow
Stephanie A. Rogers
Writing about the environment, arts & culture for EcoSalon, WebUrbanist & more. Aspiring author. I tweet about equality, sustainability and creativity.1,605 followers | Follow
Lynne Hooper
Everything is connected. We cannot separate human rights from protection of the environment.1,599 followers | Follow
Ana Elisa Fuentes
Photographer,ocean swimmer, cyclist, runner humanitarian http://about.me/anaelisa http://anaelisafoto.blogspot.com lover of music, bees, green planet ocean,1,569 followers | Follow
Paulo Saiz-Navarro
Environmental Engineer, Green, Progressive. I enjoy laughter, the outdoors, and life. I run, climb, ski. Adoption advocate! I Love elephants!1,528 followers | Follow
MIDKNIGHT6
An internet activist that passes information within the CLOUD. Mostly enviornmental awareness. "The greatest danger to our future is apathy."1,515 followers | Follow
ClareSaxon
Digital Editor for @ClimateGroup & writer aka Cle. 99% music, climate, #CleanRevolution cleantech, clouds, my french bulldog Enzo, @thoapband. Words are yum-_-*1,346 followers | Follow
NRDC New York
NRDC is dedicated to protecting the environment and public health in New York. Find us at http://facebook.com/NRDCNewYork1,319 followers | Follow
NYC Wildflower Week
Connecting NYers to their local environment. Expanding across USA in 2012. Get to know the nature near you! Tweets by exec dir @marielle_anz1,250 followers | Follow
TNC Science
Nature Conservancy Science: 550 scientists helping you get smart about nature. (Curated by @rlalasz, @eatguineapigs & @DarciP.)1,227 followers | Follow
Yale Climate Media
Yale Forum on Climate Change & the Media. Coverage and analysis from correspondents nationwide. Editor Bud Ward.1,157 followers | Follow
EcoMarketplace
EcosystemMarketplace provides news and analysis on emerging environmental markets, including voluntary carbon market, PES, water quality trading, & biodiversity1,133 followers | Follow
Tiny House Design
Simple sustainable home design and downsizing with an emphasis on DIY, solar, alternative, and humanitarian projects. I'm also @MichaelJanzen1,104 followers | Follow
WildMadagascar.org
1,093 followers | Follow
Maria Lorena
Social Safeguards | Environmental Psychology | Indigenous Peoples | Ivadoi i-Kafagway | Happiest in the mountains! Go Do1,055 followers | Follow
sarahbackhouse
Host, Speaker and Founder of cleantech video platform, Future360.tv1,051 followers | Follow
The Polar Explorer
In partnership with the UNEP. Sponsorships now available. Be part of the solution! info@polarexplorerfilm.com1,033 followers | Follow
wateractions
Gets alerts of water-related actions from 65+ social action platforms. Powered by @SocialActions Photo by fernando http://is.gd/4XmF1,013 followers | Follow
Hans Eric Melin
CEO of Optisort, a pioneering company in intelligent waste sorting. Amateur cook.979 followers | Follow
Blue Ocean Institute
Blue Ocean Institute inspires a closer relationship with the sea through science, art, and literature.979 followers | Follow
Leda Meredith
author of 'The Locavore's Handbook' and 'Botany, Ballet, & Dinner from Scratch, writer,locavore,choreographer,teacher,forager962 followers | Follow
Richard Conniff
I write about behavior, in books, magazines, tv, and radio. Check out my latest book here: http://books.wwnorton.com/books/The-Species-Seekers/826 followers | Follow
CleanAirNY
Working to make NY's air healthier - visit http://www.CleanAirNY.org to sign up for Air Quality Action Day updates!767 followers | Follow
American Prairie
Building the multi-million acre American Prairie Reserve in Montana. Open to the public & home to a diversity of native species, birds to bison! #conservation730 followers | Follow
Robert Wakulat
A curious lawyer exploring emerging issues in social innovation law as a tenant at the Centre for Social Innovation; sushi addict; member of SolarShare.653 followers | Follow
NY Sun Works
Educating about Science and Sustainability through Hydroponic Greenhouse Labs.646 followers | Follow
Saving Species
Help save species by restoring land in the areas of the world's highest biodiversity. Offset your carbon too. Our programs are vetted by top scientists.630 followers | Follow
Elizabeth Enslin
Writer of literary non-fiction and poetry, anthropologist, amateur farmer, ethnographic memoirist, nature nerd, part-time yurt dweller.621 followers | Follow
Stacy Clark
Writer on Energy, Climate & Ideas that Power Change. Co-Fndr of @InkubateDotCom -- an online home for writers and the publishers and agents they want to reach!619 followers | Follow
iNaturalist
At iNaturalist you can record your observations from nature, learn about biodiversity, and connect with other naturalists. Get outside, then check it out!549 followers | Follow
Marielle Anzelone
I'm a NYC conservation biologist interested in biodiversity at intersection of urban ecology, economics, & human health. I also really like plants. Also @NYCWW437 followers | Follow
StickyTongueProject
Addressing biodiversity, conservation and wildlife news & issues. Home of The Herparazzi: a wildlife documentary video series featuring reptiles and amphibians.373 followers | Follow
Fen Montaigne
Journalist, author of Fraser's Penguins, Senior Editor at Yale Environment 360319 followers | Follow
Profauna, A.C.
ONG dedicada a la conservación, supervisión y asesoramiento en cualquier área relacionada con los recursos naturales304 followers | Follow
PrimateConservation
International Primatological Society - Primate Conservation: Sharing information about wild primates, their habitat, and conservation issues.304 followers | Follow
K. Collins
Wisconsinite, environmentalist, human and animal rights activist and Green Bay Packer fan. Previously @2greenfish299 followers | Follow
