Geothermal heating and cooling systems are a blend of the old and the new. An ecologically and financially-efficient option.

In North America alone, there is enough energy trapped beneath the Earth's surface to produce 10 times as much electricity as coal currently does.

The newly discovered species have been isolated from other toads for 650,000 years.

The bizarre, unexplained sounds that harmed American diplomats working in Cuba may have come from the Indies short-tailed cricket.

Photographer Chris Perani painstakingly combines thousands of exposures to create each individual image.

Scientists close in on the genetic mechanisms used by mosquitoes to locate prey.

The bees were staying alive by drinking the woman's tears.

Video shows Monarch Butterflies stopping in Colorado at John Martin Reservoir State Park as they migrate to Mexico.

Leonardo DiCaprio, Linkin Park, Don Cheadle, and Sergio Marone are all judges in the Date with History contest, which will send one young visionary to address t

Let these disaster movie-esque GIFs of four major cities being swallowed up by rising sea levels serve as your motivation to help combat climate change.

We asked Carla Hall, Mayim Bialik, Andy Richter, Izabella Miko about their Earth Day plans.

Did you know that 80 percent of the known terrestrial plant and animal species are found in forests?

More than 170 world leaders signed the Paris Agreement on Earth Day 2016, but that's just the beginning.

Critically acclaimed 'Catching the Sun' offers solution to current economic crisis.

In celebration of Earth Day on April 22, NASA has launched a clever online campaign that enables participants to "adopt" a small piece of the planet.

Max creates bold, iconic posters for events like Earth Day and groups like Greenpeace.

Hollywood icon Betty White discusses her passion for animals and her book, "My Life at the Zoo."

A royal Bengal tiger takes refuge in a local man's bed from deadly floods near Kaziranga National Park.

Mexican president proves himself a visionary with a sense of humor at the Cancun Climate summit.

Leaders during the Cancun climate meetings are walking a fine line of keeping expectations in perspective, but also wanting to get something done as deadlines l

First comprehensive study on climate mortality released today at COP16 projects rapidly increasing death toll especially among children due to the impacts of cl

Christiana Figueres says any agreement will be a step in the right direction, but it's clear she's not convinced Cancun will be a huge step.

Taking the easy way out is nothing new for politicians, but this time they're taking the easy way out on climate policy.

Minister says natural disasters in his home country are evidence of climate change.

On Nature Photography Day, take your camera outside to make a difference for wildlife!

Being called a bird brain really isn't an insult, now that scientists have uncovered just how smart these feathered friends really are.

There are only 300 blue-throated macaws left in the wild.

Learn the tracks of animal species that live right next door, starting with these common neighbors.

The Australian bilby is becoming more popular, and they may just take over as the country's animal representative for Easter.

We label a lot of species with the shiver-inducing denizen of the night, even if they don't suck blood.

Here are some fascinatingly odd ways that frost, ice and snow can appear. Here are some fascinatingly odd ways frost, ice and snow can appear.

The barrage of Darwin Award-worthy and just plain cruel animal selfie photos in the news is our cue for a reality check.

Sea otters hold hands so they don't float away during naps, and baby dolphins don't sleep at all for the first months of life.

Octopuses are the eight-armed wonders of the world's oceans.

These brightly colored beetles come together in huge groups, but it's not just to cuddle.

The number is probably much, much lower than you think.

Scientists take a deeper look at how chameleons change color, and learn some tricks that could benefit humans.

The mouse deer. Or the pig deer. Or the little goat. Whatever you call the chevrotain, this is a truly distinct looking (and tiny!) ungulate.

The rise and fall of Rev. Billy James Hargis, along with the popularity of Glenn Beck, makes our media columnist long for the days of the Fairness Doctrine.

TV personality and radio host dedicates an entire segment of her MSNBC show to examining the nest of lies Glenn Beck used in recent statements about weather and

A huge, emerging crack has been discovered in one of Antarctica's glaciers, with a NASA plane mission providing the first-ever detailed airborne measurements of

Off the coast of northwest Greenland, an enormous iceberg is beginning to go to pieces.

A gorgeous new video is the best way to experience Antarctica without even feeling chilly.

What does a splintering iceberg sound like underwater? Imagine the cracks and pops of an ice cube melting in a glass of lemonade multiplied on a colossal scale.

Scientists tracking 278-square-mile block of ice hope to learn from it as it moves away from its parent glacier.

The disintegration of a giant Antarctic ice shelf that had been stable for millennia was caused by a chain reaction of lakes draining on top of the ice.

Melting Arctic sea ice has contributed considerably more to warming at the top of the world than previously predicted by climate models.

The recently completed catalog will help researchers understand the effects of climate change and address water issues of local communities.

Greenpeace was trying to film mountain scenery at Glacier National Park, but a curious marmot had other ideas.

The vast ice sheet covering Greenland could melt more quickly in the future than existing models predict.