Polar bear : shrinking ice /

It was early September 2009. Researcher BJ Kirschhoffer was in Churchill, Canada, to study polar bears. It didn't take long, however, for him to notice that something was wrong. There were bears all over the place, but many did not look healthy. Some were so skinny that BJ could see their ribs...

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Bibliographic Details

Main Author:	Person, Stephen
Format:	Book
Language:	English
Published:	New York, N.Y. : Bearport Pub., [2011]
Series:	Built for cold. Arctic animals.
Subjects:	Polar bear > Juvenile literature.