A friend and I were on the outskirts of Taos, New Mexico a few years ago and became curious about a strange-looking community in the distance ... Read more about earth ships.

It's a paradox in our mostly sedentary lifestyles that when we actually exert physical energy, it's wasted. Read more in 'Paddle your treadmill: A treadmill that floats?'

Ball lightning might be a neutral plasma - a neutral, ionized gas.

In the 1970s, Voyager 1 provided the first close-up views of Saturn's rings, and determined that the rings formed about 100 million years ago. But evidence from the more recent Cassini mission suggests the rings are much older. Read more about how Saturn recycles its rings.

The keeper of these historic gardens is ditching pesticides and promoting local plants. Mon Dieu! Read more about the Gardens of Versailles go green.

You find quicksand in places where there's water flowing underneath sand.

Vinegar talks about a new, more eco-friendly oil recovery process that uses giant underground heaters to help thick, old oil flow more freely.

Anyone who has been to Maui or driven across West Texas has seen a wind farm, where great rows of gigantic spiraling windmills turn silently in response to unseen air currents.

After a mosquito sucks your blood, you're left with a bit of mosquito saliva in your body, and it causes a mild allergic reaction - an itchy, red bump. Read more about the red bump on your mosquito bite.

A new study estimates that one species of sponge can live to be 2,300 years old — that’s about the...