Kevin Arrigo studies some of the teeny tiniest organisms on the planet -- microscopic plants called Phytoplankton. To get at what makes these itty bitties tick he climbs aboard giant ice-breaking ships and heads out to the planet’s icy North and South where they are the most active.
A new study coauthored by Rob Jackson cast doubt on the claim that hydraulic fracturing is causing drinking water to be contaminated by methane. "In about half the cases we believe the contamination came from poor cementing and in the other half it came from well casings that leaked," Jackson said.
All signs point to California's record-breaking drought conditions extending into the fall months. The state's reservoir levels are still dropping rapidly, and will continue to do so for at least another 2-3 months, Daniel Swain writes.