While the U.S. has moved away from the landmark Paris Agreement on climate change, the state of California has dug in. Alongside New York and Washington, it created the United States Climate Alliance, a coalition looking to uphold the agreement through state actions. It's also fighting with the Trump administration over the state's long-standing restrictions on car emissions, which traditionally have been more stringent than federal standards.
The state, with its range of climates and landscapes, faces multiple threats from climate change. More frequent and larger wildfires are among the most visible, but flooding, increased air pollution, the spread of infectious diseases and more days of extreme heat also are looming. The connection between climate and health was the topic of a recent panel in San Francisco at the Kaiser Family Foundation.