An engine powered by evaporation is made from bacterial spores that can lift more than 50 times their own weight.
Low-cost design could help farmers in Ethiopia maintain self-sufficient agriculture.
Artists will overlay the path of hidden creeks and arroyos on San Francisco's city streets, in a nod to waterways that used to run through nearly every valley in the city.
About 96 percent of the four-lake water complex that feeds Metropolitan Sao Paulo, home to 20 million, has been used up.
The Aral Sea is just one of several iconic inland bodies of water across the world that is now receding drastically. Continue reading →
Drought-stricken farmers and others are turning to the mystical practice of water dowsing, and many are convinced it works. Here's why. Continue reading →
A visualization by NOAA drives home the amount of damage that humans are doing to the world's oceans. Continue reading →
Make a note: if you ever find yourself exploring the moon one day and you want to try some lunar skinny-dipping, you'll have to do it at night. Continue reading →
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