The energy bill approved by the House includes a specific credit for biodiesel, which is promoted as a cleaner way to wean us off petroleum products. But there's a loophole that's giving the biodiesel subsidy a bad rap. Sarah Gardner reports.

Automakers are introducing new diesel models for U.S. drivers, as gas prices rise and tougher fuel-efficiency standards approach.

Homeowners can directly recycle water from showers or washing machines by installing what are known as greywater systems, which divert wastewater to mulch beds in the yard.

Agriculture Secretary Tom Vilsack discusses what the drought will mean for farmers and food prices, and the administration's plans to try and help.