Mars was covered in an ocean of molten rock for about 100 million years after the planet formed, researchers from the Lunar and Planetary Institute in Houston, Texas, UC Davis, and NASA's Johnson Space Center have found. The work is published in the journal Nature on Nov. 22.
Japanese sailor and environmentalist Kenichi Horie has completed a 110-day solo voyage across the Pacific Ocean in a boat propelled by wave power to claim another world first.
A major earthquake with a magnitude of 7.5 hit the region of the Sea of Okhotsk early Saturday, the US Geological Survey said, but no casualties were reported.
Scientists with the US Phoenix lander will make their first analysis of Martian ice fragments in coming days but it could be the last done in one of the probe's small ovens, NASA said on its website Friday. ...
The head of the UN's Nobel-winning panel of climate scientists on Friday said only seven years remained for stabilising emissions of global-warming gases at a level widely considered safe.
A major climate change report for Australia's government on Friday recommended the rapid introduction of an emissions trading scheme to curb greenhouse gases and warned that delay could be disastrous.
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