He hasn’t publicly expressed any interest in another campaign, but there’s lots of media chatter about the theoretical possibility.
Groundwater depletion in the U.S. contributed about an eighth of an inch to global sea-level rise.
A new San Francisco service promises to reimagine the horrors of the daily commute by strapping a hipster coffee shop onto a bus chassis.
Electric utilities are facing increased competition at both the wholesale and retail levels, so they're turning to Big Government for help.
Robert Garcia, the mayor of Long Beach, talks cars, the port, and why green is second nature for him.
This week, our roundup of badass women in the news also includes a Harvard MBA and some tech rabble-rousers.
Remember last year's disturbing news about the West Antarctic ice sheet collapsing? Wait until you hear what's happening to a huge Antarctic glacier.
Big solar projects don't have to be built in undeveloped areas, new research finds. We could fit them right into developed urban areas.
Studying geoengineering can help scientists understand climate change better, and discussing it can make skeptics less skeptical.