Climate Change

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California has set some of the world’s most aggressive climate and clean-energy policies. We investigate how successful these policies are and how they affect Californians.

Water flows along the All-American Canal near Winterhaven on Aug. 13, 2022. The canal conveys water from the Colorado River into the Imperial Valley. California water agencies that rely on the Colorado River, said Wednesday, Oct 5, 2022, that they can reduce their use by up to 400,000 acre feet annually, an amount that's roughly one-tenth of the river water the state receives. Photo by Gregory Bull, AP
Water
No deal on the Colorado River despite Trump administration deadline
The federal government has often set deadlines on the Colorado River, but in recent years has rarely enforced them. Negotiations among California and the six other basin states will now continue into next year, as Arizona ramps up its rhetoric and calls for a firmer hand from the Trump Administration in the talks.
By • November 11, 2025
A close-up view of a white sign that reads, "COP30 Brasil Amazonia Belem 2025" set up against a brown fence structure.
Climate Change
Newsom brings California to the heart of the Amazon — and the U.N. climate conference
California state officials are in Brazil for the annual United Nations climate conference. The visit highlights California’s role as a climate leader and supports its environmental policies, especially since the U.S. has no official federal delegation. However, some critics question whether the trip is worthwhile because California lacks the power to make international agreements.
By and • November 11, 2025

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