NGO releases new pictures of Brazil's isolated Amazon tribe

A non-governmental group on Tuesday released new pictures of an Indian tribe living in isolation in the Brazilian Amazon, saying they vindicated the decision to create "the biggest forested indigenous territory in the world."

Crew of mock Mars mission appear healthy, joyful

Staying inside cramped, windowless modules for nearly a year-and-half was a tough challenge for an international crew of six researchers simulating a mission to Mars under 24-hour surveillance by scientists.

Americans' circle of confidantes is down to two

Although the average Facebook user may gave some 130 "friends," in reality, Americans have, on average, slightly more than two confidantes, down from three 25 years ago, but the size of this social network has stabilized ...

Mars500 crew prepare to open the hatch

The 520 days of isolation for the Mars500 crew will end on 4 November, when the hatch of their ‘spacecraft’ is opened for the first time since June last year. Scientists eagerly await the final samples as the crew ...

Salamanders spell out evolution in action

Lungless salamanders (Ensatina eschscholtzii) live in a horseshoe-shape region in California (a 'ring') which circles around the central valley. The species is an example of evolution in action because, while neighboring ...

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