Environment Content

Anchovy Dominated Diets off the West Coast Pose New Dangers for Salmon

Katherine E Kerlin — June 25, 2025 - 12:05pm

A vitamin deficiency likely killed as many as half of newly hatched fry of endangered winter-run Chinook salmon in the Sacramento River in 2020 and 2021. These findings were published June 23 in the Proceedings of the National Academy of Sciences.

Disposable E-Cigarettes More Toxic Than Traditional Cigarettes

Katherine E Kerlin — June 25, 2025 - 5:00am

They may look like travel shampoo bottles and smell like bubblegum, but after a few hundred puffs, some disposable, electronic cigarettes and vape pods release higher amounts of toxic metals than older e-cigarettes and traditional cigarettes, according to a study from the University of California, Davis. For example, one of the disposable e-cigarettes studied released more lead during a day’s use than nearly 20 packs of traditional cigarettes.

Lake Tahoe Clarity Report: Trend Stable, Not Improving

Katherine E Kerlin — June 16, 2025 - 5:35pm

�鶹��ý Tahoe Environmental Research Center releases its annual Tahoe Clarity Report.

CA Clean Air Law Making Strides in Overburdened Neighborhoods

Katherine E Kerlin — June 12, 2025 - 10:56am

For years, families in the Bay Area city of Richmond have lived with smoke and chemicals drifting from a nearby oil refinery. That kind of exposure poses serious health risks, but a new report from �鶹��ý shows how California’s Assembly Bill (AB) 617 is helping residents take a more active role in monitoring and reducing air pollution in their neighborhoods.

Fish ‘Beauty Salons’ Offer Insight into How Microbes Move Within Reefs

Katherine E Kerlin — June 05, 2025 - 9:05am

Where do you go when you’re a fish and you need a skincare treatment? Coral reefs contain natural “beauty salons,” lively social hubs of activity where fish “clients” swim up and wait to be serviced by smaller fish cleaners. The little cleaners dart under and around their much bigger clients — even entering their mouths — cleaning their scales of bacteria and parasites like a team of car washers servicing a Buick. Sometimes cleaners even rub against their clients, providing a soothing massage.

4 Gorillas Reintroduced to the Wild in DRC

Katherine E Kerlin — May 29, 2025 - 10:21am

Four critically endangered female eastern lowland gorillas rescued from the illegal wildlife trade were reintroduced to the wild in Virunga National Park in Democratic Republic of the Congo last December. Continued monitoring shows the gorillas are healthy and appear to be transitioning well.

City-Dwelling Monarch Butterflies Stay Put

Andy Fell — May 28, 2025 - 10:00am

Monarch butterflies are famous for their annual migrations, but not all migrate. In recent years, more and more monarchs have been living and breeding year-round in California’s Bay Area, thanks in part to the growing presence of non-native milkweeds in urban gardens.

Course Inspires Next Generation of California Naturalists

Jocelyn C Anderson — May 27, 2025 - 8:30am

Students who complete “Wild Davis,” an �鶹��ý course in wildlife conservation and habitat restoration, can earn California Naturalist Certification.

Extreme Weather Cycles Change Underwater Light at Tahoe

Katherine E Kerlin — May 21, 2025 - 9:00am

Large shifts in UV radiation at Lake Tahoe are associated with wet and dry climate extremes, finds a �鶹��ý study.

Native Turtles Return to Yosemite After Removal of Invasive Bullfrogs

Katherine E Kerlin — May 20, 2025 - 9:00am

After invasive American bullfrogs croak, native turtles return to Yosemite, finds a �鶹��ý study.