De Caj?n
Pete Cashmore
The largest independent website dedicated to news & resources for the connected generation. Tweets from @mashable staff. Send questions/comments to @mashablehq.2,879,520 followers | Follow
BBC News (World)
The latest stories, features and updates from BBC News (World edition). For UK edition, follow @BBCNews. For breaking news, follow @BBCBreaking2,028,387 followers | Follow
National Geographic
Since 1888, we've traveled the Earth, sharing its amazing stories with new generations. Official Twitter account of National Geographic.1,906,846 followers | Follow
Huffington Post
The Internet Newspaper - Curated by @kerstinshamberg, @lauralizhibbard, @socialmia, @deanpraetorius, @travelinganna1,851,930 followers | Follow
Wall Street Journal
Breaking news, investigative reporting, business coverage and features from The Wall Street Journal.1,766,521 followers | Follow
UN Refugee Agency
The official account of UNHCR. Follow us as we provide vital aid and protection to the forcibly displaced around the world (@AlexandraKE tweeting)1,220,322 followers | Follow
United Nations
Official twitter account of United Nations. Get the latest information on the UN.871,684 followers | Follow
WIRED Science
Science, space, energy and robot sharks with lasers. Hosted by the Wired Science team: @betsymason, @9brandon, @adamspacemann, @davemosher & @danielaphd.689,488 followers | Follow
Greenpeace
We're an independent global campaigning organisation acting to change attitudes and behavior, to protect the environment and promote peace.490,841 followers | Follow
Cesar Millan
My whole life dogs followed me. Growing up poor in Mexico, people called me el perrero— the dirty dog boy. Now the world knows me as The Dog Whisperer.425,802 followers | Follow
NYTimes Science
Science, Environment, Space and Cosmos News From NYTimes.com/Science318,066 followers | Follow
Greg Wilson
Photography, Photos, Socialmedia & Sharing.. Champion of Good Causes & Charity. Love to Travel & Connect with People. Husband & Father of 4 Amazing Kids!256,231 followers | Follow
Jose Hernandez
Retired NASA Astronaut and native of Stockton. Running for U.S. Congress in California's 10th District. Devoted husband, loving father, and a proud Democrat.233,901 followers | Follow
National Geographic
Follow us for the latest on what's happening at the National Geographic Channel in the U.S. Questions and comments welcome!220,159 followers | Follow
TreeHugger.com
Links, Ideas and Conversation from the TreeHugger hive mind, the latest in modern green.169,607 followers | Follow
EcoInteractive
Eco Preservation Society: Inspiring Action, Empowering People,Connecting Communities & Transforming the Planet through Conservation, Reforestation & Education160,856 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.157,856 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.119,538 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 @julkosch95,524 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 issues95,496 followers | Follow
UNICEF USA
21,000 children die every day from preventable causes. We believe that number should be zero. Do you believe in ZERO?81,863 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.77,006 followers | Follow
MotherNatureNetwork
Environmental news, local foods, innovations, and green inspiration53,153 followers | Follow
WWF Climate Savers
Finding workable, practical solutions to the problems posed by Climate Change and Global Warming.48,694 followers | Follow
NOAA's Ocean Service
NOAA's National Ocean Service is the nation's premier federal science agency for oceans and coasts.44,323 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.42,855 followers | Follow
GlobalGiving
The world is full of problems. GlobalGiving is full of solutions. 10+ years, 1,000+ projects in 100+ countries in 140 characters.42,228 followers | Follow
Chef John Gallagher
Our Dream is to have a network of chefs that donate their time and talents to charities. We hold charity events that change lives. Constant-RAOKs34,216 followers | Follow
Scuba Diver Girls
We are girls who love and live for scuba diving. We care about and contribute to programs that sustain the earth especially the ocean organizations.34,133 followers | Follow
Eco Preservation Soc
Eco Preservation Society: Conservation, Reforestation and Education. We bring it together. Get conected, Get Involved, Make a difference.33,735 followers | Follow
Chris Ingham Brooke
For environmentalists who don't take themselves too seriously29,755 followers | Follow
Organic Lifestyle
Organic Lifestyle Magazine is a digital publication dedicated to organic lifestyles, alternative health and green living.27,539 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/cNFKN22,406 followers | Follow
AnimaNaturalis
Organización Iberoamericana por la Defensa de Todos los Animales. Oficial22,397 followers | Follow
Rescue Animals
We are dedicated to celebrating rescued animals, supporting shelters, rescues and animal rights groups and to animal welfare worldwide.21,673 followers | Follow
Randy Paynter
Care2 Founder, proud father, green living, social entrepreneur, human rights, peace, wellness, naturalist, chickens, bees, organic composter ;)21,313 followers | Follow
BCC Foundation
Black Card Circle Foundation, an IRS recognized 501(c)3 public charity, supports other non-profits that promote self-reliance & sustainability.19,870 followers | Follow
Winter Dolphin
I'm an Atlantic Bottlenose dolphin who lost my tail after getting entangled in a crab trap. I recently took up acting and played myself in Dolphin Tale.19,147 followers | Follow
Placebo Effect
We make it easier for friends to give friends the gifts of JOY, LOVE, HEALTH, HOPE, and SERENITY18,908 followers | Follow
the piece movement
The piece movement & piece sign acknowledge that we are - a piece of - NOT - a separate from - & encourage humans to act that way18,723 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 Denmark18,666 followers | Follow
WSPA International
The World Society for the Protection of Animals (WSPA) vision is a world where animal welfare matters and animal cruelty ends.18,385 followers | Follow
Defenders Wildlife
Defenders of Wildlife leads the pack when it comes to protecting wild animals and plants in their natural communities.18,110 followers | Follow
Earth Day Network
Take part in Billion Acts of Green: visit http://act.earthday.org/.18,084 followers | Follow
Daniel Gershenson
In Memoriam - Nepomuceno Moreno (1953-2011), del Mov x la Paz c/Justicia y Dignidad. Asesinado 28nov 2011. Nuestra obligación, combatir impunidad y desmemoria.17,119 followers | Follow
Jonathan Wilson
Helping children after trauma through / art / story / games / play / song / dance / film / love / hope / people who care.16,793 followers | Follow
United Nations Photo
The official Twitter page of the United Nations Photo Library: UN Photo covers UN meetings, events and fieldwork and holds a collection of about 800,000 images.16,589 followers | Follow
Phabiola Herrera, MD
The future belongs to those who believe in the beauty of their dreams. Eleanor Roosevelt16,283 followers | Follow
Enivronment Updates
Get a worldwide survey of scientific and political environmental news. Re-tweet if you want.16,077 followers | Follow
Wilderness Society
The Wilderness Society works for clean energy and America's forests, national parks, refuges and BLM public lands.15,479 followers | Follow
Eppo Numan
Aiming to fly the 1st. #PoweredParaglider around the world, to promote a #Universal #Declaration on #Animal #Welfare and #Sustainable #Solutions Providers14,688 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 @afmiziara11,005 followers | Follow
Smokey Bear
I'm Smokey Bear, the national #wildfire prevention icon. #OnlyYou can prevent wildfires. http://fb.me/smokeybear10,879 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.10,796 followers | Follow
United Nations DSD
United Nations Division for Sustainable Development promotes & is a source of expertise on sustdev in the UN9,833 followers | Follow
Big Cat Rescue
Providing permanent home to 100+ lions, tigers & wild cats. Ending the breeding, trade, use and abuse w/ better laws at CatLaws.com9,375 followers | Follow
Roz Savage
Ocean Rower, Author, Motivational Speaker, Environmental Campaigner9,356 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.9,151 followers | Follow
End Water Poverty
We campaign against the global water and sanitation crisis. Make your voice heard through End Water Poverty. Tweets by Jen, Sarah and Olivier.8,587 followers | Follow
Greenfudge.org
Environmental News with a Sticky Twist: Environmental News, Environment, Nature, Green living, Oceans, Animals, Universe, Green Network, Weird, Wonderful...8,584 followers | Follow
Sussex Wildlife
Sussex Wildlife Trust is the leading wildlife and landscape conservation charity in East Sussex, West Sussex and Brighton. Tweets by Richard.8,423 followers | Follow
Caroline // RSPCA
Caroline at RSPCA Australia bringing you news and answering your Qs about the RSPCA and animal welfare.8,309 followers | Follow
American Humane
The nation's voice for the protection of children & animals... we are your voice.7,725 followers | Follow
WWF + JustMeans
Commit to one idea in support of Earth Hour, recruit family and friends, change the world!7,701 followers | Follow
Henricus Peters
Making connections - #Children & #Nature, #Scouting, #EnvironmentalEducation and #Sustainability. #Playoutdoors. Also at @NAEE_UK. Fuller discussions at7,490 followers | Follow
Abbie @TweetACritter
Executive Director of Adopt-a-Pet.com and TwitterACritter. Find your new best friend at Adopt-a-Pet.com. Or, you can save a pet's life with a tweet!7,385 followers | Follow
Wildlife Action
National Wildlife Federation Action Fund, giving you the latest news and actions on speaking up for wildlife!7,326 followers | Follow
Marisa Herrera
Animal & Nature advocate, Animal Communicator, Animal Reiki Practitioner, vegan, sustainable living.7,285 followers | Follow
John Peter Thompson
Ask me your questions - Sustainability, ecosystems invasive species,natural philosophy, history, politics & current events explained7,053 followers | Follow
Northwest Fire
Tweeting fire, EMS, health & safety info, as well as life's interesting bits!7,010 followers | Follow
Pete Adoption
Gathering information and resources about animal rescue and pet adoption.6,833 followers | Follow
Nature Canada
Meet our team! The people at Nature Canada are bringing you the inside scoop and latest updates on our conservation, outreach and advocacy work.6,763 followers | Follow
Care2 Action Alerts
Care2 Action Alerts - make a difference online with Care2.com and ThePetitionSite.com!6,748 followers | Follow
Earthlings Movie
EARTHLINGS is a feature length documentary about humanity's absolute dependence on animals for pets, food, clothing, entertainment, and scientific research.6,466 followers | Follow
WSPA Canada
Our vision: A world where animal welfare matters and animal cruelty has ended. Visit www.wspa.ca to join our fight to end animal cruelty.6,164 followers | Follow
Northlandfox
Social Media & Emergency Management, C.E.R.T., & Preparedness, Globally / many interests/hobbies Volunteer, CGAUX, CERT, ARC, ARES, MRC5,937 followers | Follow
WSPA - USA
WSPA is an international animal welfare organization. Our vision: A world where animal welfare matters and animal cruelty has ended.5,879 followers | Follow
Karen Wild
Professional dog behaviourist, trainer and writer. Kind, fair, honest, qualified! APBC Full Member. Karate black belt. Mum. Real person. Come and chat!5,835 followers | Follow
WSPA Campaigners
Official HUMANE CHAIN feed for those who want an end to the cruel live animal export trade. Help stop live export; be a link in the Humane Chain.5,693 followers | Follow
Clearwater Aquarium
We are a working marine animal hospital, dedicated to marine life rescue, rehabilitation and release.5,563 followers | Follow
Soi Dog Foundation
Soi Dog Foundation is a not-for-profit, legally registered charitable organization, based in Phuket Thailand, who look after over 200 dogs at our shelter5,470 followers | Follow
New England Aquarium
Founded in 1969, the New England Aquarium is a global leader in ocean exploration and marine conservation.5,441 followers | Follow
PataPirata
Proveemos información sobre animales domésticos. Cómo rescatarlos, conseguirles casa, cómo vivir con ellos sin volverse locos. www.facebook.com/PataPirata5,431 followers | Follow
RainforestSOS
Working with governments, business, NGOs and individuals to increase global recognition of the contribution of tropical deforestation to climate change5,312 followers | Follow
AskNature (Official)
AskNature is an online inspiration source and social networking tool for the biomimicry community.5,184 followers | Follow
Inspiration Peak
Inspiration Peak is the world's favorite place to get inspired. Follow us on Twitter and we'll send you some great quotes to keep you motivated!4,672 followers | Follow
Shelly Skoog-Smith
Let's prevent animal cruelty & neglect! I will post animal welfare, rescue & environmental info & petitions. Dog mom of 3, crafter, jewelry designer, editor. ☮♺4,613 followers | Follow
Care2Causes
Keep up to date on the causes you care about most with stories from Care2's network of bloggers and non-profit partners.4,433 followers | Follow
Moxie Paws (TM)
Social Maven & News Aggregator for Dog & Cat Owners. Does your Pet have MOXIE: energy, nerve, courage & spirit?4,258 followers | Follow
RainforestSite
The Rainforest Site is dedicated to the preservation of rainforests around the world. Your daily click funds the purchase of rainforest land for conservation.4,144 followers | Follow
Parvo Treatment
Parvo treatment for dogs using natural, herbal, chemical-free products is what we’re mainly about, but we're into anything organic or natural.4,141 followers | Follow
Friend a Gorilla
4,087 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!4,017 followers | Follow
Turtle Trauma Centre
Kawartha Turtle Trauma Centre (KTTC) is a licensed rehabilitation centre and hospital for Ontario's turtles. It is a registered charity3,798 followers | Follow
Andy Greene
I'm a green redneck. Find out more about green living for rural folks at GreenRednecks.com. Close to the Land, Caring for the Earth.3,697 followers | Follow
WSPA Latinoamerica
Sociedad Mundial para la Protección Animal La WSPA trabaja por un mundo donde el bienestar animal importe y la crueldad hacia los animales haya terminado.3,530 followers | Follow
Conservation NW
We're keeping it wild in the NW. Join us as our staff member Jasmine Minbashian stars this year in BBC's #LandoftheLostWolves, on BBC/Discovery!3,261 followers | Follow
I'm Tired Of...
Raising money for the world's most important causes in a unique way. What are you tired of?3,242 followers | Follow
We-Care.com
Support your favorite cause when you shop online with We-Care.com. Also follow Gina, our Director of Operations, @WeCareChica3,146 followers | Follow
Child Soldier Relief
The mission of Child Soldier Relief (CSR) is to advocate on behalf of child soldiers by serving as a central repository of information relating to the topic.3,125 followers | Follow
UberCat: Agent 9D9
Welcome to Scratchtown. It's time to expand this one-dog, one-cat town into a world class destination for Pet Lovers. All followers welcome. We'll follow back!3,111 followers | Follow
Care2Healthy
Care2's Healthy Living was thousands of ways to enhance your life, including food & recipes, health & wellness, a healthy home and pets.3,063 followers | Follow
The Disaster Center
Links to people & information covering Earthquakes, Fires, Floods, Hurricanes, Monsoons, Tornadoes and other disasters around the globe.3,012 followers | Follow
Nigella Hillgarth
Executive Director, Birch Aquarium at Scripps; committed to the future of our Ocean, our Planet3,001 followers | Follow
stephenbaugh
CEO of @queensberrynz and @photojunction, father, husband, son, brother, friend, geek and kid chauffeur ... incredibly blessed and happy!2,994 followers | Follow
Elias Qarmout
AS a non-profit organization, strives to provide a safe, loving,home for abused and difficult-to-place children through the Qarmout Children’s Village.2,883 followers | Follow
adopt a negotiator
We're a platform for young people tracking our countries' roles in #UNFCCC / #climate negotiations. Fighting for our future. Proud part of @tcktcktck.2,856 followers | Follow
BiddingForGood
BiddingForGood online fundraising auctions. Managed by @AshleyPWade. Sharing industry knowledge and spreading good will to support worthy causes.2,632 followers | Follow
Adriana Mullen
Food-Still Life Photographer. A Professional Chef FCI, who wants to stay out of the kitchen forever. Design/Mac Geek/Books Addict. Blog:http://bit.ly/aRuiI72,484 followers | Follow
Save A Pet IL
A no-kill rescue and adoption center looking to find our residents their 4ever homes!2,401 followers | Follow
350.org MediaRoom
Breaking news on 350.org and climate change alongside dispatches from the grassroots climate movement.2,293 followers | Follow
Tees 4 Trees
Tees 4 Trees is an environmentally responsible apparel company dedicated to the preservation and reforestation of the planet.1,977 followers | Follow
Last Chance Pets NY
Can you help these pets find their forever homes? It's now or never. We are about one thing only - saving lives! (We are a sub-twitter of @LastChancePets)1,928 followers | Follow
Sofia Goncalves
Animal lover, vegetarian, helping spread the word. I follow all animals lovers. Always RT the most importants ones. Plz help...1,898 followers | Follow
Return A Pet
We want to warn everyone about the Scam Company ReturnAPet.com. They have Scammed people out of hundreds of thousands of dollars worldwide. Please Beware!!1,898 followers | Follow
Lost & Found Pets IE
Using social petworking to reunite lost dogs, cats and other pets with their owners in Ireland. Please post listings via main site.1,872 followers | Follow
Miguel Acosta V
Editor del blog Con-Ciencia; interesado en temas sociales, ambientales, de comunicación y computación; me apasionan el periodismo, la sociología y la astronomía1,801 followers | Follow
Suzy Gneist
Single Mum/Graphic Designer spends her free time on Nature, Permaculture & Sustainability - http://exquisitemoments & http://theseedsofthought.wordpress.com1,779 followers | Follow
Prince William SPCA
The Prince William SPCA benefits the animals of the greater Prince William County, Virginia area. An all-volunteer organization dedicated to protecting animals.1,654 followers | Follow
I Love Polar Bears
I Love Polar Bears Dot Net - news, picture of the day, videos of the week, forum, store, games, podcast1,641 followers | Follow
350 en Español
Únete al movimiento mundial que está inspirando al mundo a buscar soluciones a la crisis climática. #ConectaLosPuntos1,637 followers | Follow
Cobach Seybaplaya
Cobach 04 Seybaplaya Ing. Santos Efrén Yam Keb. Education / Animal & Human Rights/ Environment... http://cobach04.livejournal.com1,564 followers | Follow
Kate Redman
Marine mammalogist, cetologist, oceanophile, childfree, Potterhead, Ravenclaw & total geek. Used to ID dolphins for @CBMWC. Recently moved to Amsterdam.1,416 followers | Follow
Canmore Rabbit
I am Stu, a wild rabbit in Canmore, Alberta Canada. I am the voice of the rabbits in Canmore. We don't want trouble, we just want to eat your tasty flowers!1,384 followers | Follow
Albertomty
Es peligroso tener razón cuando los demas estan equivocados. Soy responsable de lo que escribo, NO de lo que tu entiendas. ◕‿◕ 1,382 followers | Follow
Glowno Animal Asylum
Each animal has own story, sometimes very painful. Let’s help them to obliterate bad memories and let’s make them to have the basis to believe in human goodness1,375 followers | Follow
Kyle G. Crider
Artist. Scientist. Geek. Climate hawk. Steady-state economista. LEED AP ND1,341 followers | Follow
Crissie Chambers
Hi I'm Crissie my passion is working with dogs and lucky enough it is also my job1,314 followers | Follow
RedRover Team
Tweeting from RedRover, formerly United Animal Nations, a nonprofit that helps animals in crisis and connects suffering animals with people who care.1,237 followers | Follow
SummerWorkation
We help teachers find, assess and secure summer opportunities, so they can return to the classroom as stronger teachers! Learn more at www.summerworkation.org1,114 followers | Follow
Clean Up the World
Clean Up the World inspires and empowers communities around the globe to clean up, fix up and conserve the environment.1,113 followers | Follow
Rescue Tails
1,059 followers | Follow
Maria Lorena
Social Safeguards | Environmental Psychology | Indigenous Peoples | Ivadoi i-Kafagway | Happiest in the mountains! Go Do1,059 followers | Follow
Paulo Freire
1,040 followers | Follow
Bear Creek Sanctuary
Non-profit exotic wildlife sanctuary in Barrie, Ontario. We rescue confiscated, zoo surplus & situationally at risk exotic animals. Twitter acct. by Dana.947 followers | Follow
Save Your Logo
Save Your Logo provides opportunity to company to invest in the conservation of the species used and seen in their logos.817 followers | Follow
childhealthsite
With a free, daily click, our visitors help children get the health care they need. Services are provided by our charitable partners.749 followers | Follow
Insightful Quotes
One great quote every hour, supplied by @kdascheller. Let me know if you found something! And obviously you should follow me!729 followers | Follow
asylumaccess
Asylum Access is an innovative, international nonprofit dedicated to making refugee rights a reality in Africa, Asia and Latin America.721 followers | Follow
Horse2Heart
Equestrian News Great Horse Stories Horse Rescue resources and more.676 followers | Follow
Stand 4 A Cause
Our mission is to change the world, through our message of equality. Woman's rights, Men's right's, Gay rights, Minority rights. Civil rights. Human rights.662 followers | Follow
Paola Lopez
This page is in connection to Animal Rescue Examiner. See link above.541 followers | Follow
PetAssistanceNetwork
Fighting the Homeless Pet Population by Helping Pets Keep and/or Find their Loving Homes.386 followers | Follow
Jorge Zetina
I.S.C., developer .NET, C++, C#, robotics and history lover. Wannabe guitar player334 followers | Follow
Safety AroundDogs
The Leader in Dog Bite Prevention - Saving the Lives of Children, Dogs and The Human-Canine Bond122 followers | Follow
Michael Von Hulsebus
I am committed lto creating a sustainable planet and fighting the proliferation of plastic via promotional power of reusable bags. Owner BagThePlanet.com107 followers | Follow
Fairy Forest
I enjoy taking pictures of wildlife. My yard is certified thru the NWF, I'm a Tree Hugger. I love my Family, Animals, Angels & Fairies. I'm an Army Mom.54 followers | Follow
