Photo: Intake towers for the Hoover Dam rise above the surface of Lake Mead in April 2023. Will Lanzoni/CNN Lake...
Sick sea lions, dolphins overwhelming Southern California rescue organization
Photo: A sick sea lion, possibly suffering from domoic acid toxicity, is seen resting on a California beach in June...
Mapping Beaver Dams with Machine Learning
A new model deploys a neural network to spot beavers’ engineering exploits in aerial and satellite imagery, an approach that...
Endangered Freshwater Fishes: Does California Lead the World?
Photo: Some endemic fishes of California: Little Kern Golden Trout (top left). SONCC Coho Salmon (top center). Santa Ana Speckled...
Half the nation’s wetlands just lost federal protection. Their fate is up to states.
A Supreme Court ruling leaves large swaths with widely varying oversight. Photo: Tens of millions of acres of wetlands are...