Green 'Family Weekend'; nature TV premieres.

Actress was also recently named PETA's Person of the Year.

Marilu Henner and others stage reading 'Surviving Grace,' a play about Alzheimer's.

Bombarded by bats and covered in bees, George McGavin investigates 'Ultimate Swarms' for Animal Planet.

New Discovery series 'Lone Target' turns Joel Lambert into human prey.

The backwoods genius of 'Billy Bob's Gags to Riches' lives high off low-brow novelties.

TV networks hope animal-centric programming can lure viewers who care more about pets than the big game.

National Geographic's popular 'Brain Games' series takes a look at the laws of attraction in a special Valentine's Day episode.

The co-founder of Soshal Group says if we want to influence the future of ethical business, we have to talk about it differently.

They may not be as well known as Rachel Carson or Jane Goodall, but they've contributed in profound ways to the environmental movement.

New Zealand residents are not happy that their pristine water may be exported for bottled water. The company that wants to export it doesn't want it to go to wa

California's Anza-Borrego Desert State Park is home to a natural desert oasis, complete with huge palm trees and gravel-bottom wading pools.

Stewart Brand, creator of the Whole Earth Catalog, helped shape the future we live in now.

Spending cuts are the talk of Washington these days. Some are looking to make big political gains with cuts that won't create measurable savings.

Sen. James Inhofe is trying to set himself up as a 'climate hoax' expert, but he lacks even the basic facts about climate change in his own state of Oklahoma.

For the first time in two decades, a U.S. presidential debate season has passed without any candidate or moderator mentioning climate change.

NYC Mayor Michael Bloomberg's surprise endorsement of Obama follows the devastating effect of Hurricane Sandy on New York City and the Northeast.

World leaders have pledged to limit the rise to 3.6 degrees, but a new study finds global temperatures could increase 10.8 degrees by century's end.

Fearful of late summers and early springs trimming their seasons, ski areas all over the United States are calling for action on climate change policy.

Reducing carbon dioxide may be solved in storing emissions in deep, subterranean rock throughout the country.

Southern Asia, western Europe and southern Australia are among the areas at most risk.

In a speech in Indonesia, Secretary of State John Kerry also derided "head in the sand" climate change deniers.

In a surprise announcement, Earth's two largest economies revealed a game-changing agreement to cut carbon emissions.

The new U.N. climate agreement is being called 'a monumental triumph' and 'a turning point for the world.' Here are a few key points to keep in mind.

The Food Network host known for her outrageously caloric concoctions talks about how she's losing weight and why exercise isn't as 'addictive' as she'd been to

A Chicago group is urging seniors to cha-cha-cha in an effort to ward off Alzheimer's, a disease that affects a disproportionate amount of Latinos.

Recent research finds that grapefruit juice stems weight loss by 18 percent in mice and may be as effective as diabetes drugs.

The American Heart Association wants parents to keep the added sugar in children's diets to less than 25 grams a day. Here's why and how to do it.

Smartphones and video-sharing social media sites make uploading and viewing videos easier than ever, driving our obsession with pets.

This gratitude project is simple, quick, creative and you probably have everything you need to participate in your pocket already.

Family, friends, and Facebook join in the efforts to remember Kristina Chesterman by making her biggest dreams come true.

One Australian is on a mission to have coffee, one-on-one, with each of his 1,088 Facebook friends. The question is, would you want to do that?

Mom posts open invite on Facebook and receives a 'Reddit hug' from the online community.

This will create the world's largest virtual graveyard.

The U.S. Department of Energy has awarded $29 million in Recovery Act funding for weatherization training centers in 27 states.

Katie's Krops is helping kids fight hunger one garden at a time.

As a partnership with a nonprofit that provides shelter to homeless families goes to show, Amazon's takeover of downtown Seattle isn't without altruism.

Despite being dumped at 12 years old, Billy Goat the dog wouldn't end his days at the shelter.

Who needs calendars of yoga cats when you could have bearded mermen from the Newfoundland & Labrador Beard and Mustache Club on your walls?

Stockton is set to become the first city in the U.S. to experiment with providing a universal basic income to some low-income families.

Housing charity New Story teams with 3-D printing startup ICON to fabricate 100 affordable and innovative abodes in El Salvador.

A leopard cub left paralyzed by a car is pulling off a 'miraculous' recovery, thanks to the efforts of Wildlife SOS in Maharashtra, India.

Video: Chuck interviews Ray Anderson of Interface Inc., author of 'Confessions of a Radical Industrialist'.

Never doubt the power of the humble frog. These miracles of nature might just help us sail through flu season.

Cancer patients given psilocybin experienced reduced depression and existential distress, even at the end of life.

Scientists have found a 'world-class' helium gas field in East Africa. That's a big deal, and not just because squeaky voices are funny.

Using a single-pixel camera, a patterned light source and some computer processing, researchers have demonstrated a cheap way to do X-rays with "ghost images."

New studies on cancer are paving the way for faster diagnosis, better treatment — and more lives saved.

Stunning 3-D videos capture the drama of life on a subcellular level.

It may be subliminal, but you transmit your fear to your dentist.