A study in the Lancet looked at over-60 walkers, and those who worked on a busy London street didn't fare as well as the park walkers.

New research out of Australia unlocks clues about how your body responds to exercise at the cellular level.

From your heart to your head, here's why you should lace up your sneakers and walk.

This is what the skies over Beaumont, Texas, look like whenever one of the local refineries loses power.

New study finds that air pollution limits led to 10 percent more rainfall for Atlanta in the 1970s and 1980s.

While it ranks high on the gross scale, peeing in a pool has never been considered hazardous. A study, however, uncovers health effects.

It's well-known that secondhand smoke is bad for our health, but it's also dangerous for our furry friends.

Here's a graphical glimpse at America's most endangered wildlife, where they live and how many are left.

Mankind does some weird things to save animals from extinction.

Endemic species run a higher risk of extinction because of their geographic isolation.

New study from Australia suggests resurrection of extinct species could lead to a loss in overall biodiversity.

Here are the world's rarest animals, the loneliest creatures on Earth: 8 species with fewer than 10 confirmed individuals left alive.

The Jambato harlequin frog had been feared extinct for at least the last 30 years.

Ancient 5-foot 7 penguin weighed at least 220 pounds and speared fish with its sizable beak.

BirdLife International has confirmed the extinction of eight bird species, including the Spix' macaw in Brazil.

Humans have driven almost 600 plant species extinct since 1750s and that number is likely much higher.

Break out fresh limes and tequila for National Margarita Day — or any time you want one.

Six West-Coasters do a Kentucky Bourbon taste test. It gets funny.

Prickly pear margaritas are a delicious introduction to this fierce fruit.

Ohio’s first legal moonshine distillery makes its home in a town with a fascinating bootlegging past.

A festive punch lets your guests know you're ready to celebrate.

Add variety to your football-viewing drink choices with these beer cocktails.

Nonalcoholic cocktail drinkers deserve balanced drinks, beautiful glassware and the ritual of drinking a cocktail, too.

Try these non-alcoholic cocktails, zero-proof cocktails. Your non-imbibing friends will thank you for giving them great choices.

Stealing bar glasses to keep as a souvenir goes way back and plays a key role in the mint julep, Kentucky Derby relationship.

A medium-size solar flare erupted from the sun this weekend, hurling a cloud of plasma and charged particles toward Earth on a cosmic path that is expected to d

Sometimes scientists infuse some pop culture into their species names. Can you match the celeb to the critter?

Not all penguins make their home in icy Antarctica. See if you know where in the world to find these penguin species.

Animals use their senses to detect other animals, communicate and do some wild things. Can you identify the super senses of these animals?

UPDATE: Van Jones clears up the 'green czar' buzz.

Google lays out a plan to make renewable energy cheaper than coal.

Answer 20 questions to get your resiliency score -- and find out how self and community-sufficient you are.

HyperSolar magnifying film can increase solar panel efficiency by up to 300%, making solar competitive with fossil fuels.

A well-known Chinese solar power company has filed for bankruptcy, but this may actually be a sign of health for the industry.

The Guest-Imator is a digital portion calculator that even considers the amount of leftovers you want to have. It works for vegan meals, too.

Organic supermarket chain EkoPlaza teams with an anti-plastic waste group to launch a supermarket aisle liberated from plastic packaging.

Copenhagen gains an unusual new landmark in the form of a multitasking waste-to-energy plant designed by Bjarke Ingels Group that functions as a ski slope.

These plastic filters far surpass plastic straws in coastal cleanup tallies and they're toxic on land, too.

The Bramble Cay melomys lost most of its habitat to rising sea levels.

Psychologists and scientists are concerned about the rising rates of suicide among children, and what the shrinking gender gap might mean.

We need a mix of solitude and interactions for a healthy social diet.

New flexible glowing sheets are inexpensive, easy to recycle, and could someday replace lightbulbs and OLED technology.

While the verdict may still be out about the iPad in the human world, pets across the country are unanimous in their confusion.

Who needs nature when you can have virtual reality windows that simulate any setting with the flick of an iPhone app?

Nintendo gets the lowest score on the Greenpeace Guide to Greener Electronics for its failure to address e-waste or cut CO2 emissions.

Are the days of 'Star Wars'-type droids upon us? Israeli researchers host a tournament to see who can create a robot with the most human handshake.

Paper that stops bullets and yarn that conducts electricity.. it sounds like Sci Fi, but Nanocomp is making these futuristic dreams a reality.

Ann Louise Gittleman offers '1,268 Ways to Outsmart the Hazards of Electronic Pollution'

There are many reasons to recycle electronics, including copper, steel, gold, silver. The wiring in some older desk tops may yield up to 5 pounds of copper.

The ultrathin New Apple MacBook laptop has been called one of the "least repairable, least recyclable" computers on the market. Sustainability was not included