Critical List: Warmest March on record for 25 states; LEGO hermit crab shell
Half of the United States just lived through the warmest March on record.
The EPA gave 20 companies approval to make E15, a biofuel containing more ethanol than blends available now in the U.S.
President Obama’s campaign released a new video about his love-hate relationship with Big Oil.
Commercial-scale production of algae biofuel is starting in Brazil.
Hermit crab makes its home in a bespoke LEGO shell.