The Presidential Daily Brief


  1. Elephant seal

    Scientists Are Using Seals to Map Climate Change

    They’re going under the radar. Antarctica’s apex predator, the elephant seal, can dive to depths of nearly a mile and a half — and is more mobile than ship-deployed monitors tracking the rate at which Antarctica’s ice shelves are melting. A team of scientists from the University of Tasmania is taking advantage of their flippered research assistants, attaching monitoring devices to 20-30 seals. After two years of observation, they say, they’ve determined that Antarctic melt is diluting the continent’s heavy, cold layer of ”bottom water,” which could disrupt ocean circulation worldwide.

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