How does gecko tape work?

To solve practical issues, sometimes all we have to do is study nature. An often quoted example is that of the gecko, a small animal known for the phenomenal adhesive strength in its feet, which allows it to walk on walls ...

Then and now: How glaciers around the world are melting

Over the past decade, scientists and photographers keep returning to the world's glaciers, watching them shrink with each visit. Now they want others to see how a warming planet is melting masses of ice in a series of before-and-after ...

Mammoth tusk lifted from Seattle construction pit

To the sound of cheers, a fossilized mammoth tusk found in a Seattle construction site has been retrieved from a 30-foot-deep pit in downtown Seattle, and it's on its way to a museum.

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