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Researchers return from `mock-up Mars` world after 4 months

Last Updated: Saturday, July 26, 2014, 13:07

Six researchers have come back to the real world after spending 4 months in a mock Mars habitat on a Hawaiian volcano Mauna Loa.

Astronauts learn to live and cook in Mars-like environment on volcano slope

Last Updated: Monday, August 12, 2013, 19:02

A 1 million-dollar NASA research mission is nearing completion, as six astronauts prepare to come back down to ground level from the slope of a Hawaiian volcano after spending four months there.

Atmospheric CO2 levels hit record high

Last Updated: Wednesday, May 15, 2013, 15:23

Carbon dioxide concentrations in the atmosphere have crossed the symbolic 400 parts per million (ppm) threshold.