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.

Drought makes Borneo's trees flower at the same time

Tropical plants flower at supra-annual irregular intervals. In addition, mass flowering is typical for the tropical forests in Borneo and elsewhere, where hundreds of different plant timber species from the Dipterocarpaceae ...

Landing is key puzzle in Mars trip, experts say

Landing astronauts safely on Mars is one of the biggest technological hurdles for any future manned mission to the Red Planet, even more complicated than last year's daring rover touchdown.

First color image of Curiosity's tracks from orbit

As Curiosity prepares for the historic first drilling operation on Mars, the HiRISE camera aboard the Mars Reconnaissance Orbiter captured an image of it from 271 km (169 miles) up, along with twin lines of tracks and the ...

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