Letters: Poll, Polar Bear
Listeners respond to the interview with Andrew Kohut, president of the Pew Research Center, and one listener points to a curious trend on the show. Robert Siegel reads from listeners' e-mails.
Global warming has struck the Bering Sea between Alaska and Russia. A new study shows that shifting temperatures already are having an impact on one of the Earth's richest habitats, affecting everything from walruses and fish to ducks and seals.