Nikki Haley suspends her campaign

Republican presidential candidate Nikki Haley, who had vowed to continue her campaign despite losing nearly every state in this year's…

Should piñon-juniper forests be converted to biofuels?

CALIENTE, Nevada — As Varlin Higbee looks out at the pinyon pine and juniper-covered forest that fills the high desert…

EPA Prepares to Reject Southern California Smog Plan

The U.S. Environmental Protection Agency is preparing to reject California's plan to curb air pollution in Los Angeles, a consequential…