New U.S. Energy Secretary issues warning on global warming

In his first interview since being confirmed as President Obama's Energy Secretary, Steven Chu warned that California's farms and vineyards could die out by the end of this century.

Chu said that water shortages in the West could have huge consequences for the land in California, his home state and the United States' leading agricultural producer.

Chu's comments show how seriously the Obama Cabinet considers the consequences of global warming, which is in sharp contract from a Bush administration that never issued such a warning.