245 00|a Arctic bears.

260 __|a Arlington, VA : |b PBS, |c 2008.

500 __|a Copyright permission expires 02/17/09.

500 __|a Title from web site description.

520 __|a Polar bears are living on borrowed time. They are the descendents of grizzlies, long-ago evolved to live and hunt on the frozen ice of the Arctic, eating a specialized diet of seal meat. But the winters have become increasingly warmer, the ice is disappearing and raising a family becomes a much more difficult proposition when hunting time is short and food is scarce. Grizzlies, on the other hand, are masters at living off the land, making a meal from a wide variety of foods - meats, seeds, berries, insects, fruit and honey. Their world is bountiful and expanding northward, converging with what once was the icy domain of the polar bear. As the two worlds meet, are the polar bears fated to become grizzlies once again? 60 minutes.

521 __|a Middle school to adult.

546 __|a Closed captioned for the hearing impaired.

650 _0|a Grizzly bear.

650 _0|a Polar bear.

650 _0|a Ecology.

710 2_|a PBS

710 2_|a WNET (Television station : New York, N.Y.)

730 0_|a Nature (Television program)

856 42|a http://www.pbs.org/wnet/nature/arcticbears/index.html