Penguin poo stains expose emperors' icy homes
BONN, Germany (Reuters) - Ten new colonies of emperor penguins have been found in Antarctica after satellite photos showing brownish stains on the ice turned out to be the excrement of thousands of birds.
The findings, revealed by the British Antarctic Survey (BAS) on Tuesday, will help understand penguin populations and the vulnerability to global warming of the breeding colonies which are on sea ice.
http://www.reuters.com/article/environmentNews/idUSTRE5507T320090601
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