California Gov. Jerry Brown addresses a December 2015 conference on climate change in France at Le Bourget, near Paris. (Photo: Frederic Legrand, COMEO)In recent years, Gov. Jerry Brown has signed groundbreaking legislation establishing the most ambitious greenhouse gas emission reduction targets in North America, and he has been praised globally for his environmentalism and his efforts to curb global warming. But at home – and elsewhere — he faces opposition to some of his environmental policies.