A new 4-minute film casts digital humans in real extraterrestrial destinations, guided by the timeless words of Carl Sagan.

Ancient Mars featured flowing rivers and sizable lakes — but that doesn't mean the Red Planet definitely could have supported life.

NASA's Curiosity rover has made a surprising find that could help scientists get one step closer to figuring out if Mars has ever supported life.

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

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

Animal poaching makes Silas Weir Mitchell ('Grimm') 'murderously enraged'.

The EPA is punting on two more big decisions, making it a tough year for anyone who votes the environment.

Watch how one man's donation contributed to surgery that enabled 3-year-old Congo native Loic Mbeze to walk.

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

Video: Chuck Leavell, keyboardist for The Rolling Stones and the cofounder of MNN, explores the national wildlife refuge system.

Video: Chuck Leavell, keyboardist for The Rolling Stones and the cofounder of MNN, finds out about the importance of having a single national wildlife refuge se

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

A great pied hornbill at Jurong Bird Park developed cancer, and doctors used 3D printing to make a prosthetic casque for it.

Scientists in Singapore have concocted a drug cocktail that can extend an animal's lifespan twofold.

As their habitats give way to sprawling human developments, more and more animals are being forced into cities and suburbs.

We're driving fewer miles and more of us are going car-free, yet we're only scratching the surface of car-isn't-king culture.

Electric carmakers need more cobalt for their lithium-ion batteries. Tiny Cobalt, Ontario, aims to become a sizable supplier.

Video: At 6 billion bottles and counting, a Fortune 100 company has forged a partnership that’s created the largest recycling center of it’s kind in the wor

With guidance from the World Wildlife Fund, Swedish retailer IKEA uses bath towels and duvet covers to spread a message of conservation.

These kitchen tools aren't expensive, and they're sure to get a lot of use by any home chef.

13 terrific tools to gift the DIYer in your life

A floating sheet of pumice could bring an infusion of life to Australia's Great Barrier Reef.

By studying particles on the ocean floor, scientists conclude that Earth supports one-third less life than originally thought.

Two million trees have been planted in the Upper Ouachita National Wildlife Refuge as part of a carbon offset program.

Filmmaker and writer Jonathan Kesselman talks about his latest project, what's funny about global warming, and California's growing anti-circumcision movement.

The student-designed mobile game Galactickitties lets you save space-flying felines and benefit the ASPCA too.

Filmmaker Josh Seftel bought his mother an iPad last year and turned her into a YouTube sensation. In the process, he the two developed an even closer bond.

A process intended to teach girls about business instead teaches one of life's hardest lessons.

A portion of sales from the new toy line will be donated to UNICEF and Save the Children.

Bill Richardson says the terrorist's death gives President Obama an opportunity to tackle one of the most contentious issues in Washington.

The Freezycup popsicle mold makes it easy to make your own frozen treats without using a bit of plastic. It's a great product, if a bit pricey.

Coca-Cola teams up with Tokyo-based design studio Nendo to release a collection of gorgeous recycled glass tableware dubbed, most fittingly, Bottleware.

Tired of replacing stuff every few years? This website solves that problem.

Buy well by buying once: You'll save money, time and our planet's dwindling resources.

Even subtle changes of scenery can have dramatic effects on our mental and physical health, a growing field of research suggests.

Our planet has lost 60 percent of its vertebrate animals since 1970, but there still may be time to save the rest.

Wildlife photographer and filmmaker Morgan Heim talks to MNN about sexism and success in her field and how to help the next generation of female photographers.

As a wall goes up dividing the U.S. and Mexico, a range of environmental concerns are surfacing. Conservation photographer Krista Schlyer documents the impact.

In "Ay, Mariposa," conservation filmmakers highlight the people, animals, and fragile habitats impacted by the barrier at the border.

If a bird has zygodactyl feet, that means two toes point forward and two point back. This makes life easier for woodpeckers, owls, parrots and ospreys.

Austria's Pasterze Glacier is quickly disappearing, but thanks to this giant, super-zoomable photo, at least you can see it up close before it's gone.

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

Toyota partnered with Saatchi & Saatchi LA for its fun Prius c marketing campaign.

Commercially made cat trees can cost hundreds of dollars, but you can save money and make your kitty happy with DIY feline furniture.

'Over the River' would suspend silver fabric over miles of Arkansas River.

These stunning busts are crafted using recycled circuit boards, CPUs, wiring, keyboards and other salvaged electronics.

Singing helps the spirit soar, but can it boost the body as well?

The fountain of youth may be elusive, but there are plenty of things you can do to give your longevity a boost.

Chris Grady's Lunarbaboon comics show off the sweet and sour sides of parenting and life.

Data from 160,000 adults in 31 countries shows that having access to books at home may help develop stronger literacy, numeracy and technology skills.