October 19, 2018, 10am PDT
Voters in two Western states next month will determine whether to require energy utilities to increase their share of electricity from renewable sources to 50 percent by 2030. In Arizona, the campaign has become the costliest in state history.
September 1, 2016, 10am PDT
As difficult as it was for the legislature to pass SB 32 on Aug. 24, reducing emissions 40 percent below 1990 levels by 2030 will prove far more challenging. Brad Plumer, senior editor of Vox, explains the bill and what it will take to meet the goal.
February 8, 2016, 6am PST
Disposal of wastewater from fracking has long been associated with earthquakes in Oklahoma as well as Ohio and Texas. A new study shows they were likely the cause of a swarm of quakes in 2005 in the capital of oil in California, Kern County.
August 13, 2015, 11am PDT
A bill working its way through the California State Legislature would require the state to reduce petroleum its consumption by half in 15 years. CALmatters, a nonprofit journalism venture, seeks to find out if it is even possible.