Kurtis Alexander

The historic dam-removal project on the Klamath River was widely praised for restoring fish and wildlife, but it also left a community without a lake.

California just found a new wolf pack — another sign of the once-vanquished predator's stunning comeback. But furious ranchers are ‘losing cattle daily.’

With four dams on the Klamath River now demolished, fish are moving past the old dam sites at a pace that has surprised scientists.

Nearly 100,000 birds have died at Tule Lake in what scientists say is the worst outbreak of avian botulism in wildlife refuges along California-Oregon border.

Peninsula Open Space Trust has purchased a 1,340-acre property in southern Santa Cruz County to preserve the natural landscape, wildlife and tribal heritage.

The city’s Yosemite-sourced water has long been lauded as one of the best supplies in the nation. But some taste testers aren’t so sure.

President-elect Donald Trump has pledged to stop California’s push for electric vehicles, undermining a vital state program for addressing climate change.

Measure GG in Berkeley would nudge large buildings to electrify by making natural gas use considerably more expensive.

The president-elect has promised to boost water deliveries to cities and farms while environmentalists will fight to preserve rivers and streams.

Scientists are reporting success with a 15-year program at Yosemite National Park to reestablish the endangered Sierra Nevada yellow-legged frog.