Science Jul 15 California cap-and-trade is working — for other states A new report indicates California's much-heralded carbon trading program may actually be harming the neighborhoods it was designed to protect.
Science Jun 13 NASA Rover knocked out as giant dust storm engulfs Mars Flight controllers tried late Tuesday night to contact Opportunity, but the rover did not respond. The storm has been growing since the end of May and now covers one-quarter of the planet.