December 17, 2014, 1pm PST
A University of Minnesota study published in PNAS looks at alternatives including ethanol and electricity and determined that "it's hard to beat gasoline." Even electric vehicles can do better or worse depending on how utilities source electricity.
March 6, 2014, 2pm PST
The planners of the 1950s didn’t foresee the growth of the Southwest’s two largest cities. Upgrading the freeway connection between the cities, however, remains a tough task.
August 22, 2009, 7am PDT
It didn't last long: one month to be precise. The American public ate through the $3 billion stimulus program for purchasing new, efficient cars and trucks as fast as they could qualify their older gas guzzlers for the $3,500 and $4,500 credits.
July 31, 2007, 6am PDT
<p>A developer that had offered to make the residents of a Florida seaside community overnight millionaires has walked away from the deal after negotiations stalled.</p>