'Liturgusa algorei' one of 19 new species identified in the tropical forests of Central and South America.

His critics often accuse him of alarmism, but nowadays the former VP is sounding positively upbeat.

Debuting at Sundance, the follow-up to the 2007 documentary continues the former vice president's efforts to educate on the climate crisis.

Beautiful phenomenon of noctilucent blue clouds may be growing due to greenhouse gas emissions.

The Halley VI Research Station is spending its first winter without humans.

The hole over Antarctica is slowly healing, but research suggests the ozone layer is thinning at lower latitudes.

From contacting your representatives to signing petitions, here are 5 ways to make your voice heard, and 2 that aren't worth your time.

The environment in your neighborhood and surrounding community has a huge impact on your health and lifespan.

The Davis Museum at Wellesley College will remove 120 pieces of art that were created or donated by immigrants.

From the hidden costs of our digital world to the frozen edges of civilization, here are a few films to catch this year.

On March 8, International Women's Day, women around the U.S. plan to go on strike.

These fruits and veggies from Sydney artist Danling Xiao are both adorable and thought-provoking.

#ILookLikeASurgeon aims to inspire inclusion and diversity in the surgical field.

Clicktivism or slacktivism is using social media to support a cause. Critics say it's activism lite, but often people are moved to get more involved.

British Prime Minister Theresa May is avocado toast after young people rise up to vote.

Some cities have lowere euthanasia rate for shelter animals by implementing innovative programs. Steal these ideas to make it happen where you live.

These kids see no reason to wait until they are older to make a difference in the world.

13-year-old Sarah Jones is helping the stray cats of her local Utah community by constructing shelters and getting them spayed or neutered.

Bella the pig lost his siblings and even a eye on a factory farm in Queensland, Australia, before he found a safe home.

From Nelson Mandela and Mahatma Gandhi to Rosa Parks and Jimmy Carter, these tireless advocates have made the world a better place.

Micro-volunteering lets you give back when there's no room for another commitment.

World Central Kitchen founded by Chef José Andrés has served over 3 million meals since Hurricane Maria ravaged Puerto Rico, and it's not done yet.

Tina Solera made it her life's mission to save the galgo, a traditional dog of Spain that has fallen into deep disregard.

Elaine Seamans didn't give up on the dog named Negra — even after he snapped at her.

For a time, this cow was the sole inhabitant of her own private island in Poland. She swam there to avoid slaughter.

After seeing yet another school shooting play out, Clare Schexnyder realized she couldn't sit back and do nothing.

British government prohibits wild animals in U.K. circuses by 2020, joining similar bans in Scotland and Ireland.

The torch really has been passed to a new generation as these words from David Hogg of Marjory Stoneman Douglas High perfectly sum up.

Here are eight young people who made an impressive mark on history and our world.

A sick hen led photographer Janet Holmes to a group of people who live with chickens as equals. She decided to document those relationships.

Hardened inmates let a dog's love open the door to their hearts through the Pawsitive Change program.

One woman refused to give up on Pinky the dog, who was deemed dangerous after a run-in with a cat in Des Moines, Iowa.

A dog named Horace embraced visitors like there was no tomorrow — until someone gave him one.

Meet LeeAnne Walters, the Flint mother fighting for clean water in her community and elsewhere. For her efforts, she won the Goldman Environmental Prize.

Newborn coyotes whose mother disappeared are saved by a wildlife rehabilitator and are singing like angels.

This technology could help Thailand's stray dog population go from zeroes to heroes.

A teacher in a rural community in Virginia is running 100 miles in 24 hours to send her students to college.

The shelter was swamped with calls to adopt dumped kittens.

Every kind of dog can be a feel-good story wrapped in fur. Just ask King, the former shelter dog who has inspired countless people.

Paul Phillips and Karen Perry were still mourning their old dog when Zeppelin crashed into their lives.

A dog named Tigger who couldn't stop trembling when he first came to the shelter now can't stop kissing his rescuers.

Through the animal welfare group he founded, Morris Darbo is saving more than the lives of animals.

Galgopod creates a lifeline for some of the world's most tragic dogs.

Rodney Smith Jr. launched a grassroots movement, Raising Men Lawn Care Service, to change the world with his lawn mower.

This rescue group is shining a light the countless animals who spend their lives in labs.

A puppy named Dallas who was almost euthanized without ever leaving the shelter just landed a dream job: As a police K9.

Lucky was a broken street dog until he journeyed half a world away to inspire others.

Miss Willie the dog spent 12 years on a chain before she finally got to see the world.

Boyan Slat’s system has arrived at the Great Pacific Garbage Patch, and it's already collecting plastic.

The Sip of Hope coffeehouse in Chicago's Logan Square supports mental health initiatives, including suicide prevention.