Environmentalists and climate hawks are cheering, but many experts aren't excited about the state making rooftop solar panels mandatory on most new homes beginning in 2020.
Air pollution could be the next battleground between California and the Trump administration, which is reviewing the Golden State's special legal authority to regulate tailpipe emissions.
Trump administration officials argue that states can regulate more effectively than the federal government. But without leadership from the top, federalism may allow red states to avoid acting.
The story of New York's 1992 Democratic primary -- when another Clinton beat another left wing candidate with the help of another Cuomo.
In the 1970s, California Governor Jerry Brown helped pioneer mandatory sentencing. Now he's working to overturn the practice.