Saltier Oceans Could Have Prevented Earth From Freezing

The Sun shone 20% less brightly on early Earth, and yet fossil evidence shows that our planet had warm shallow seas where stromatolites -- microbial mats -- thrived. Now a study may have solved the "faint young Sun paradox," showing that saltier oceans could have...

Saltier Oceans Could Have Prevented Earth From Freezing

The Sun shone 20% less brightly on early Earth, and yet fossil evidence shows that our planet had warm shallow seas where stromatolites -- microbial mats -- thrived. Now a study may have solved the "faint young Sun paradox," showing that saltier oceans could have...

Nepal To Move Everest Base Camp From Melting Glacier

Nepal is preparing to move its Everest base camp because global warming and human activity are making it unsafe. From a report: The camp, used by up to 1,500 people in the spring climbing season, is situated on the rapidly thinning Khumbu glacier. A new site is to be...