Satellite imaging reveals more penguins than expected in Antarctica

04/19/2012 | · USA Today

Researchers have used satellite imaging to determine that there are 595,000 emperor penguins in Antarctica -- a figure about twice as high as previous estimates. "This is the first comprehensive census of a species taken from space," said Peter Fretwell, a geographer with the British Antarctic Survey. Earlier counts depended on ground tallies or aircraft surveys.

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