In this country, charging a small fee for plastic grocery bags is working

Plastic bag use has dropped 80 percent as a result. Is this the model for the rest of the world?

Dogs have been wandering America longer than we knew

Ancient skeletons found in Illinois are more than 10,000 years old.

Snaps for your soul: The Nature Conservancy's photos of the year

Contest winners feature stallions playing, erupting volcanoes and a moment of pure serenity.

Natalie Portman burns her mouth for the planet

She made a documentary about factory farms and told us about it while eating painfully spicy wings.

Humans are just a tiny fraction of all life on Earth

That’s one of the many findings from the most comprehensive global census of living organisms ever done.

Hawaii bans some sunscreen to protect coral reefs

The ban is the first in the U.S. and comes after extensive research on the effect of oxybenzone on the fragile reef ecosystem.

Wisconsin teams up with Israel to tackle water issues

State is following in the footsteps of California and Nevada, which are already working with the Mediterranean country.

Spiders prefer mating with older women – and they don't mind getting eaten afterward

So maybe their decision-making skills are questionable. But at least they died happy.

Fruit flies have orgasms – and, apparently, they’re amazing

In bizarre research project, scientists also discover why some fruit flies avoid getting drunk.

Tel Aviv ranked among world's greenest cities

The Israeli city by the Mediterranean features a stunning array of tree species from around the world.

Amazing photos of male ibexes fighting over ladies

Like other (ahem) animals, ibexes will do just about anything to get some.

You may soon be able to afford the most expensive food on the planet

Scientists in Israel are figuring out how to grow truffles.

Did scientists just discover dark matter?

One of the biggest mysteries of physics may not be a mystery for much longer.

There's another Earth out there, and a massive fireball may have just obliterated it

Harvard scientist reveals how it still might be possible for us to move there.

My disastrous first time surfing

Surfing is, as it turns out, really hard.