With rules governing the hard-hit Colorado River set to expire, the Trump administration presented options for dealing with the ongoing water shortages. Some experts said they would require greater sacrifice from California than other states.

An appeals court has rejected a California agency's plan to issue bonds to pay for a proposed water tunnel in the Sacramento-San Joaquin River Delta.

James Blanchard, a fourth-generation shrimper, was prepared to hang up his nets because of collapsing prices caused by imports. He's not a fan of Trump's persona, but appreciates his policies.

A rapid climate collapse during the Late Ordovician Mass Extinction devastated ocean life and reshuffled Earth’s ecosystems. In the aftermath, jawed vertebrates gained an unexpected edge by surviving in isolated marine refuges. Over millions of years, they diversified into many forms while competitors faded away. This ancient reset helped determine which creatures would dominate the planet ever after.

The once-booming population that passed California twice a year has cratered because of retreating sea ice. A new kind of intervention is needed.

Agriculture has been free to use Arizona's groundwater, but as water levels drop, the state may have hit a turning point.