Several billion years ago, Mars had a vast ocean that may have harbored some giant waves.

Magnetic force fields may be the secret to deep space exploration.

A fresh batch of satellite images showcasing the red planet's diverse topography is providing scientists with valuable data for future travel to Mars.

The space agency is trying to understand what vegetables may thrive on the red planet, and how to help them do so.

Former astronaut Buzz Aldrin says the $3.5 billion spent annually on the space station should go towards efforts to colonize Mars.

NASA has just released an image of a unique hole on the surface of Mars.

Finding water ice could change everything we thought we knew about the red planet, and make colonization feasible.

The Mars InSight lander, developed to peer deep into the red planet's interior, is slated to launch on the morning of May 5.

It would be the first heavier-than-air craft flown on another planet.

NASA’s Mars Reconnaissance Orbiter captured the colorful anomaly while surveying a 'field of dunes' on the red planet.

Dust storms like this might provide hints about what happened to the water on Mars.

An in-depth study into the resources and tech needed to turn Mars into Earth finds we're not quite there yet.

Experts estimate that there are as many as 170 moons orbiting the eight planets of our section of the galaxy.

Mars' Korolev crater is a well-preserved crater permanently filled with ice.

See the stunning images captured over 15 years by the European Space Agency's Mars Express in this beautiful greatest hits montage.

NASA unveils new spacesuit for the first woman and next man to wear on the moon in 2024 and eventually Mars.

Life-affirming data from 1976 was dismissed as a 'false positive,' but former NASA scientist Gilbert V. Levin is speaking up.

'Nashville' star Eric Close goes green by cleaning up after others.

Luke Perry and Ricky Shroder star in Hallmark's 'Goodnight For Justice: Queen of Hearts.'

'Switched at Birth' stars raise poultry, reveal upcoming storylines.

CBS' ELEMENTARY — TV series reduces waste; Lucy Liu saves energy.

PETA Person of the Year returns in musical series 'Smash'.

A solar computer bag, which comes with charging adapters for various devices, was popular item with celebs like "Modern Family" star Rico Rodriguez.

The actress, who follows a mostly vegetarian diet, stars in her first American TV show, 'Red Widow.'

Plus: The daughter of the late wildlife expert Steve Irwin stars in Hallmark movie.

He plays a KGB spy in 'The Americans'.

Plus: NBC's 'Parenthood' wins green seal.

Actress helped create wells in third-world countries.

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

We chat with co-hosts David Frei and John O'Hurley to get a behind-the-scenes look at this year's event.

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

Gold Rush? More like cold rush! The cast and crew of the miniseries reveal how they battled extreme weather to bring this epic tale to the screen.

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

A new George Clooney film and a National Geographic documentary tell the true story of the art experts who foiled Hitler in World War II.

Chuck Leavell took a break from his music to discuss global parks and how we can make them better.

Global effort will start in the U.K. city of Bristol — with over 36,000 children from 130 schools planting saplings.

Psychologists wanted to know why some people are more likely than others to be proactive. Here’s what they found.

Meet the environmental organizations wielding the power of Facebook to inspire, educate and advocate for the planet.

Accolade recognizes Turner's 'remarkable commitment to protect and preserve our natural world.'

Honey bees between pollination gigs still need to eat. Efforts are underway to keep them from starving when they’re off the clock.

Large-scale installation, by artist John Gerrard, simulates the sun and night sky above a solar thermal plant in Nevada.

People have done this forever, but today's technology makes it easier and faster.

Idea of including environmental impact of food production won't fly this year.

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.

Conservation photographer Krista Schlyer is documenting the people, wildlife and landscapes of America's 'forgotten' river.

American employers may have paid a steep price for the eclipse, but it was just what the nation needed.

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

The Environmental Voter Project has a plan to awaken a sleeping giant in American politics.

When you're out on the trail, a little etiquette can take you a long way.