Discovery Channel is running the great nature series "Planet Earth" all day, until 10 pm EST. Then a three-hour block airs at 11 pm EST tonight. Fascinating stuff. Watching the elephant pulled down in the night by starving lions...the polar bear desperately and futilely trying to kill a walrus...the bat cave filled with literally millions of roaches...the almost never seen white snow leopard...the shark leaping from the ocean to grab a hapless seal--amazing. I'm buying the series as a Christmas gift for my brothers...
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