There’s a giant hole in Antarctica and scientists aren’t sure why. The hole, which was detected about a month ago, is roughly 30,000 square miles or the size of the state of Maine. It's the largest hole spotted in the Weddell Sea since the 1970s, scientists say.
The Svalbard Global Seed Vault celebrates its first decade in operation by accepting its millionth sample—and a grant for work to keep those samples safe despite melting permafrost.
New research shows that permafrost soils hold massive quantities of mercury — nearly twice as much as is held in all other soils in the world, plus the mercury in the oceans and the atmosphere —
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