The U.S. has seen once-in-500-year floods eight times already this year.
A new report reveals the big water problems California has yet to solve.
Tesla wants to glam up the boring world of roofing.
Megan Davies has accused the governor's administration of misleading the public about water quality near coal ash sites.
California wants to curb methane emissions, but flatulent cows might not cooperate.
It's the return of smog city, as southern California gets hit by the worst pollution in years.
Clinton’s team has enormous size advantage over Trump.
Whatcom County, Washington, is concerned about public safety.
We’re in an era of cutthroat plug competition — which is both good and bad.