Scientists are concerned that the habitats of polar bears might be melting. The debate may affect the environmental philosophy of the Bush administration. Guests explain how the driving factor might be global warming and chemical pollutants carried toward the Arctic Ocean.
Guests:
Richard Harris, NPR science correspondent
Elizabeth Shogren, NPR science correspondent
John Stowell, vice-president for environmental policy, Duke Energy
A transcontinental highway brings potential economic prosperity -- and environmental ruin.
An animated Robert Krulwich chemistry lesson -- in five episodes.
The U.S. has all the tools it needs to replace its old coal system -- except money.
Who are the biggest carbon polluters today? Who will it be in 2030?
Potential scenarios for a deal in Copenhagen.
See what climate change could do to a coastline near you.
Explore a global warming issue and see what NPR has reported from around the world.
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