Climate
Barack Obama
This account is run by #Obama2012 campaign staff. Tweets from the President are signed -bo.15,956,070 followers | Follow
Greenpeace
We're an independent global campaigning organisation acting to change attitudes and behavior, to protect the environment and promote peace.487,770 followers | Follow
HuffPost Green
Latest environment & energy news, green-IY projects, animal stories & more (contact: huffpostgreen@huffingtonpost.com)96,428 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 @julkosch95,117 followers | Follow
National Wildlife
National Wildlife Federation works to inspire Americans to protect wildlife for our children's future. Staff updating: @starfocus @rarewildlifeguy @ksuzj88,842 followers | Follow
World Resources Inst
Environment and human needs - climate change, global warming, ecosystems, green business, sustainable markets, good governance, sustainable development29,551 followers | Follow
Kate Sheppard
Reporter at Mother Jones covering energy, environment, reproductive rights, etc. Contributor with Current's Countdown. Also like: running, bikes, books.29,061 followers | Follow
Greenversations
The official blog of the U.S. Environmental Protection Agency28,884 followers | Follow
Climate Progress
Blog dedicated to providing the progressive perspective on climate science, climate solutions, and climate politics.27,328 followers | Follow
Sustainable Energy
rlsh, superhero, author, actor, I am raising $1 trillion for wind, solar and geothermal energy. Spread the word.26,140 followers | Follow
John Kerry
26,067 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.25,930 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/cNFKN22,348 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/fqDgUQ20,299 followers | Follow
UN Climate Change 09
United Nations Climate Change Conference 2009 in Copenhagen (COP15), brought to you by the Ministry of Foreign Affairs of Denmark18,567 followers | Follow
Science Mag News
The news staff at Science Magazine bring you the hottest science news and stories, served up every weekday.18,410 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!17,825 followers | Follow
Simon Hinton
Entrepreneur, Eco-Developer, International Healer, Reiki Master, NLP Master Practitioner, Quantum Power Visionary.16,032 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.15,940 followers | Follow
OneClimate
OneClimate.net is a new social networking space for sharing ideas and taking action on climate change.14,917 followers | Follow
Energy Action
Updates from the youth clean energy movement. Building a generation-wide movement to address the climate crisis and create a #powershift!13,097 followers | Follow
Peter Kobel
Writer, author, advocate for environmental, economic and social justice.12,836 followers | Follow
Pete Griffin
prez/ceo of big brothers big sisters of central AZ/youth advocate/music, yankees & political junkie/used to create and cover social campaigns for MTV11,993 followers | Follow
Jaymi Heimbuch
Green Technology Editor and writer @TreeHugger. Environmentalist and photography enthusiast.11,839 followers | Follow
Campus Progress
Young people working for progressive change. Campus Progress is a project of the Center for American Progress. [tweets by CP Staff]9,258 followers | Follow
AP Climate Pool
News, discussion and a behind-the-scenes look at climate change & environment issues from The Associated Press, the essential global news network7,565 followers | Follow
America's Power
The American Coalition for Clean Coal Electricity (ACCCE) tweets about clean coal technology, coal-based electricity and energy issues.7,393 followers | Follow
Wildlife Action
National Wildlife Federation Action Fund, giving you the latest news and actions on speaking up for wildlife!7,281 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 2009.6,896 followers | Follow
Tec-Falante
6,480 followers | Follow
Global Exchange
Global Exchange is a membership-based international human rights organization dedicated to promoting social, economic and environmental justice around the world6,053 followers | Follow
Environment Oregon
State-based, citizen-funded, and member-powered group working for a cleaner, greener, and healthier Oregon5,311 followers | Follow
Emily Gertz
Journalist. Co-author w/@PatrickDiJusto of @OReilly's Environmental Monitoring with Arduino. Bylines: @TPM, @OnEarthMag, @Ecomagination ... www.emilygertz.com4,940 followers | Follow
Brooke Jarvis
Soon-to-be-former web editor of @yesmagazine. Failure to RT doesn't necessarily mean I disagree, either.4,559 followers | Follow
JesseJenkins
Clean energy policy analyst. Credible source. See http://gplus.to/JesseJenkins/ All views solely my own.4,357 followers | Follow
Luis Alves
Member of the Ovimagazine team,a daily multi-lingual non-profit online magazine based in Helsinki. Author/engineer/activist/environment - decentralization -arts4,207 followers | Follow
ClimaTweets
Pulling together the best Climate blogs on the planet. Email to be added.3,969 followers | Follow
Miles Grant
Progressive politics, environmental policy, climate science, community activism & baseball watching. Opinions are my own. Unauthorized. Unprofessional. Etc.3,716 followers | Follow
Teryn Norris
Social entrepreneur, Stanford grad, Truman Scholar - now serving in Secretary of Energy Steven Chu's office. Views are solely mine.3,704 followers | Follow
CampusEcology
National Wildlife Federation's CampusEcology program promotes climate leadership and sustainability on campus with resources, events, publications, & examples.3,498 followers | Follow
Michael Brune
I have two kids, a lovely wife, and am the Executive Director of the Sierra Club. Check out my new book at www.comingcleanbook.org.3,482 followers | Follow
Kevin Peel
Labour & Co-op Cllr for Mcr City Centre & Lead Member for Gay Men's Issues. Try to have normal life too. Views expressed not mine. I don't have any views...3,327 followers | Follow
Annie Almeyda
Committed to life, protection and respect for the environment and animals3,154 followers | Follow
Greenpeace Students
The Greenpeace Student Network is an alliance of passionate leaders fighting environmental crimes with grassroots power. www.greenpeacestudents.org3,082 followers | Follow
Chesapeake Climate
The Chesapeake Climate Action Network is the first grassroots, nonprofit organization dedicated to fighting climate change in Maryland, D.C., & Virginia.2,811 followers | Follow
Larry Oliver
#climatehawk #climatecrisis #water #watercrisis Warning! High Volume2,682 followers | Follow
Nihilo Zero (blog)
Radical Politics, Biocentric. For peace, sustainability & REVOLUTION. Tweeting as if it mattered.2,645 followers | Follow
Susan Gleason
media and community outreach at @yesmagazine, cofounder @reclaimthemedia, social media mentor, social change connector; pro eco-cities, peace & justice2,600 followers | Follow
Patrick Fitzgerald
Director of Education Advocacy, National Wildlife Federation: Legislation & Federal Agency Updates on Children & Nature, Env Ed, Public Health, Outdoor Play2,482 followers | Follow
EnviroSupportCenter
The Environmental Support Center helps grassroots groups nationwide that work on climate, water and other environmental justice issues.2,480 followers | Follow
groundswell
Groundswell's mission is to unlock communities' shared economic power to grow sustainability and expand prosperity on the local level.2,350 followers | Follow
Russ Walker
Editor, writer, politics junkie, bad photographer ... managing editor of KING5.com.2,310 followers | Follow
Ashley Anderson
Climate activist, writer, puppet-maker, gov't un-overthrower, #occupy organizer. Co-founder, member of Peaceful Uprising. Grateful for my beloved community.2,234 followers | Follow
Kelly Senser
Nature-loving mom with passion for wildlife gardening, photography and outdoor play. Program manager at National Wildlife Federation.2,052 followers | Follow
Pradeep K.Verma MBBS
As a retired physician (MD) I feel it a HIGH MORAL OBLIGATION to insure I keep working to help people become HEALTHIER HAPPIER and ALWAYS SMILING1,902 followers | Follow
Oregonian Enviro
1,869 followers | Follow
Jennifer Kutz
Very tall marketing sort for Moshi. Recovering basketball addict. eBay junkie. SF fanatic.1,864 followers | Follow
Whit Jones
environmental justice. the golden rule. grassroots organizing. bikes. power shifting.1,807 followers | Follow
philaroneanu
co-founder & US Campaigns Director @350, cyclist, banjo player1,715 followers | Follow
Mary Anne Hitt
Wife and mom, Director of Sierra Club's Beyond Coal Campaign, lover of mountains, rivers, music, dogs, good food, simple pleasures.1,541 followers | Follow
Cheryl Hogue
chemicals, geoengineering, & climate, reporting 25 yrs+ on environmental issues, science & policy wonk1,504 followers | Follow
Sean Kinney
Supporting Pickens Plan in Ohio! Join us! | Linkedin http://unhub.com/9xXT | FB www.unhub.com/y0Sn | PickensPlan Ohio1,399 followers | Follow
IndigenousEnviroNet
IEN is a North American network of Indigenous Peoples fighting for environmental justice1,396 followers | Follow
Peter Lysymanka
I am following the Green Movement and a supporter national-clean-energy,and Green-Energy. not losing to China. We need Change Effect-of-the-tea-party on us.1,212 followers | Follow
Gillian Caldwell
Human rights and climate advocate, mother of Tess and Finn1,167 followers | Follow
RichardGraves
Richard Graves founded Fired Up Media[.com] to help youth people from around the world tell their stories from the frontlines of global warming.1,158 followers | Follow
Sarah Terry-Cobo
reporter, freelance journalist, lover of business, science/environmental and clean technology news y todas las cosas latinoamericanos. member: SEJ, NAHJ, IRE.1,146 followers | Follow
Adam MacIsaac
Social Media Guy, Environmentalist, Youth Engagement Activist, Music Lover (@ECMusicTV), Filmmaker and General Tech Dork. #Cdnpoli #Climate1,115 followers | Follow
billyparish
co-founder of @SolarMosaic and @EnergyAction and author of @mkngood (www.makinggood.org)1,110 followers | Follow
COP15 Webcast
Webcast from UN Climate Change Conference 2009 (COP15), brought to you by Ministry of Foreign Affairs of Denmark and UNFCCC.1,084 followers | Follow
Climatoblog
Anne-Sophie, Grégoire, Isabelle, et Raffa bloguent pour la COP15! #Climat Change #Copenhague #Cop15 on www.ecoloinfo.com and www.youphil.com/fr/blog/climatoblog1,082 followers | Follow
Change&Switch
we like working with other people and organisations on environmental and human rights issues // we're putting together a journalism team for COP17 right now1,070 followers | Follow
Josh Stempel
CSR and Sustainable strategy. Try to make both, meaningful, measurable and fun. Citizen of SoCal, Husband and Dad. Opinions are my own.1,036 followers | Follow
Richard Power
Writes & speaks on spirituality, sustainability, human rights, risk & security issues, with particular emphasis on Darfur & the Climate Crisis.988 followers | Follow
ItsGettingHotInHere
965 followers | Follow
Ethan Nuss
Climate justice activist traveling Southeast Asia. Adventure, peace, & poetry.962 followers | Follow
Cathie Bird
Psychoanalytic psychotherapist, citizen scientist, writer, and justice activist in eastern Tennessee. Also @4dEarth958 followers | Follow
PowerShift West 09
Youth climate conference for renewable energy and climate justice. West Coast PowerShift conference at the University of Oregon (Eugene, OR) in October.944 followers | Follow
Climate Lab
We've launched a public climate change wiki for knowledge sharing and collaboration on climate change issues. Add your climate change info!940 followers | Follow
Thomson Reuters AUS
Australia's climate change hub - the online meeting place for climate change specialists and corporate Australia. Brought to you by Thomson Reuters.936 followers | Follow
ReDirect Guide CO
Living Green Made Simple. We are a certified green business directory and sustainable living resource guide for the Boulder, Ft. Collins, and Denver areas893 followers | Follow
Youth Decide
Australian youth vote on climate change on until Sept 21 - Vote Now!876 followers | Follow
Michelle Braga
Business Developer, Brazil & Rio+20 Coordinator, Code REDD Campaign @ Wildlife Works Carbon870 followers | Follow
CYD to Copenhagen
We are concerned Canadian youth who want to help shape the Canadian Climate Policies to create a second phase of the Kyoto Protocol. #Climate #UNFCCC869 followers | Follow
Monica Christoffels
American Filipina fighting for climate justice. I love my Ducks, my bioregion and my global community. let's figure out how to save the world together.841 followers | Follow
RAN Actions
RAN actions. As they happen. Rainforest Action Network uses creative non-violent direct action to protect forests, communities & #climate. #green #activism814 followers | Follow
Shari Caudill
Freelance writer and activist. Disabled by RSDS/CRPS. Please visit http://www.rsdsa.org for more information about this painful & crippling disease..786 followers | Follow
Alicia Cypress
digital editor, investigations at NPR; recovering WaPo climate, biz and tech editor; wine drinker.784 followers | Follow
John Woods
Virginia Tech 2007 alum, UT-Austin bioinformaticist and Ph.D. student, violence prevention activist, swing dancer.783 followers | Follow
Nate Gulley
Political organizer. Bus rider. Wannabe data geek. Bubble tea enthusiast.778 followers | Follow
Jeremy Blanchard
Community Organizer/Activist for Climate and Sustainability/Livability. Drupal Developer for @ActivismLabs678 followers | Follow
Katherine McEachern
design-addicted climate activist and youth organizer. mostly tweeting under @percentblog these days678 followers | Follow
REDDCarbon
Carbon markets entreprenuer and investor. Co-founder of carbon forestry start-up.618 followers | Follow
Julian Keniry
Helping move greener campuses and communities to the top of the agenda for the public health, economic resilience and international relations.600 followers | Follow
ChristineNWF
I'm the communications director for National Wildlife Federation, political junkie and wildlife lover.597 followers | Follow
Branden Barber
Rainforest friendly, board member Int'l Accountability Project and Amazon Watch, focus on fundraising, non profit management & marketing. Trees are the answer!572 followers | Follow
SouthernEnergy
builds an inclusive student- and youth-led movement in the Southeast that empowers communities, develops leaders, and promotes a clean, just energy future!566 followers | Follow
Neutralize Carbono
Low Carb Economy, Global Warming and everyting about climate change and mitigation.562 followers | Follow
Action Factory DC
Young people working to create a strong global climate agreement that stops global warming553 followers | Follow
Kartikeya Singh
Climate and energy interested social entrepreneur, researcher and diplomat in training.547 followers | Follow
Natalie Gille
BIKE MESSENGER & OUTDOOR ENTHUSIAST - freespirit travel livemusic wine outdoors sunshine camp bicycle auras nature love bliss...explore in the woods527 followers | Follow
Freedom Freethem
Reporting Live from the res', barrio, white house or hood suburb near you.522 followers | Follow
Jason Kowalski @1Sky
No New Coal. Millions of Green Jobs. Cut Carbon. Let's get this movement moving!493 followers | Follow
Yael Borofsky
Reporter @TechnicallyPHL. @BTJournal/@theBTI alum. Hockey columnist @idlermag. Fueled by coffee and ice cream. http://mneumozine.tumblr.com/480 followers | Follow
Max Greenberg
National Wildlife Federation spokesman for environmental education, Eco-Schools USA and Campus Ecology programs. Views are my own, RTs not endorsements.477 followers | Follow
Emily S. Ryan
Community Mobilizer, Planner, Activist, Environmentalist, Bioneer, and Independent Politician.475 followers | Follow
Siddhant Choudhary
Vice President Marketing @AIESECIndia, Implementer, Shaper, Atlethic, I work to learn and impact. Excellence in everything I do is my ultimate goal.473 followers | Follow
Fair Climate Project
Providing community leaders w/ tools, resources, and opportunities to help them advance and advocate fair & equitable solutions for climate justice!454 followers | Follow
Florian S.
421 followers | Follow
Blaine O'Neill
421 followers | Follow
Climate Justice Fast
2009: in the lead-up to the failed COP15 Copenhagen climate talks, CJF was the 1st ever international hunger strike for climate justice. It lasted over 40 days.402 followers | Follow
Zachary Stark-MacMil
Personal twitter for Zachary Stark-MacMillan: organizer, trainer, and programmer.391 followers | Follow
Blake H. Schmidt
I am passionate about people and the planet and a shared sustainable future for all!385 followers | Follow
Craig S. Altemose
Working to build consensus on a better future. Cynical Idealist. Working for you, whether or not you know it.381 followers | Follow
Nicole Staudinger
From a town with zero traffic lights and very green grass. Now exploring the new media news ecology, tweeting for @journaccel348 followers | Follow
juliendossier
low-carbon strategies, founder of quattrolibri (www.quattrolibri.com), author of the BETA Programme (www.betaprogramme.org)344 followers | Follow
Miguel Mejia
Actively learning about social barriers, health, and environment in an urban world. Exploring my new found passion for teaching in DC.333 followers | Follow
Paul Spraycar
SF, Sierra, climate, agriculture, conservation finance, Packard Foundation, cycling, fly fishing324 followers | Follow
Charles Denson
I'm a Political Science major at the University of Oregon. I'm the Board chair for OSPIRG285 followers | Follow
Sarah Murphy
284 followers | Follow
Nadia Hadad
Mom, coffee, books, fairies, travel, leo, wife, music, environment. I am my dreams, my hope, my fears, my life. I am ME, and I'm okay :)283 followers | Follow
Tristan Bayer
Life inspires creativity which inspires protection. EARTHNATIVE creates media campaigns that promote sustainability, conservation and creative problem solving.261 followers | Follow
greenpeach
259 followers | Follow
Musicgiving.org
Twitter managed by Jonathan Hanley. Music + Social giving. Music brings us together. musicplanet.com + musicgiving.org254 followers | Follow
Adam Hlava
Works at @gensunited | Caine - Hackman Theorist | @Packers and @Brewers Fan | Connected to @kevinbacon in under six degrees252 followers | Follow
Patrick Wylie
Post-modern forester interested in all things forest: industry, global enviro, climate and REDD246 followers | Follow
illoopination
224 followers | Follow
Jenny Bedell-Stiles
Youth organizer, network developer, political activist, pancake-maker, outdoor-lover208 followers | Follow
Aditya Deo
Environment, Technology, Friends, Music, Poetry, Finance... that's me!207 followers | Follow
Cascade Climate Netw
The Cascade Climate Network. Building a Sustainable, Just, and Prosperous Future for All!205 followers | Follow
Climate Justice Leag
We are the Climate Justice League at the University of Oregon.200 followers | Follow
Carrie Anne Johnson
A Green Warrior Mama, spreading permaculture via community, promoting reuse & conservation, and working to protect human, animal & environmental rights.200 followers | Follow
Travis Prinslow
College student in Oregon, studying Poli Sci and Philosophy. looking for internships in the field.184 followers | Follow
David_Sievers
181 followers | Follow
Praween Dayananda
166 followers | Follow
Tim Rawlings
I'm a photographer, environmentalist, and long time life model...155 followers | Follow
Kolleen Kawa
enviro|Midwesterner|bookworm|grammarian|social media lover/hater149 followers | Follow
Corey Shott
Environment. Climate Change policy, in particular. Politics. Rugby. General insane state of the world. (Views expressed here are my own)142 followers | Follow
Jennifer L
twenty-something student, environmentalist (@ecojl), vegetarian & fangirl // tweets about music, pop culture, food, DIY, feminism & more!132 followers | Follow
Hey Nw Natural
Uniting gas customers with farmers to stop NW Natural from building the LNG Palomar Pipeline.91 followers | Follow
Tessa Barker
Farm girl in training, interested in homesteading, real food, and melancholy Scottish pop music.85 followers | Follow
Jesse Orange-Hough
Passionate about global health, sustainability, sports, music, spirituality and happiness. Sieze the day & celebrate friends and family68 followers | Follow
Anton Kunin
Interested in current affairs, social trends and meaningful news analysis. Later want to work in the news industry.65 followers | Follow
LaneOSPIRG
64 followers | Follow
UO StudSustCoaltion
48 followers | Follow
Crystal Grant
15 followers | Follow
