Environmental Toxicology Content

Maternal Exposure to Crude Oil, Flame Retardants Can Affect Later Generations

Katherine E Kerlin — August 27, 2025 - 11:53am

A tiny fish with transparent embryos is helping University of California, Davis, researchers shed light on how exposure to crude oil and flame retardants can affect behavior, skeletal growth, cardiac health and other internal functions in offspring and subsequent generations.

The research on multiple generations of Atlantic killifish (mummichogs) was published across three papers in the journal Environmental Science and Technology.

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.

Sulfur Runoff Amplifies Mercury Concentrations in Florida Everglades

Katherine E Kerlin — May 08, 2025 - 10:26am

Sulfur from sugarcane crops is flowing into wetlands in the Florida Everglades, creating toxic methylmercury, which accumulates in fish, a UC Davis study finds.

Alaska’s Rusting Waters: Pristine Rivers and Streams Turning Orange

Emily C Dooley — May 20, 2024 - 11:54am

Thawing permafrost in Alaska could be exposing minerals to weathering, which is staining rivers orange. UC Davis and partners are investigating.

Older Wildfire Smoke Plumes Can Affect Climate

Katherine E Kerlin — March 23, 2022 - 11:45am

Aerosols carried in wildfire smoke plumes that are hundreds of hours old can still affect climate, according to a study out of the University of California, Davis.

The research, published in the journal Environmental Science and Technology, suggests that wildfire emissions even 10 days old can affect the properties of aerosols — suspended liquid or particles that are key to cloud formation.