Toxic chemicals

Microplastics are turning up everywhere, from remote mountain tops to deep ocean trenches. They also are in many animals, including humans. The most common microplastics in the environment are microfibers – plastic fragments shaped like tiny threads or filaments. Microfibers come from many sources, including cigarette butts, fishing nets and ropes, but the biggest source is synthetic fabrics, which constantly shed them. Textiles shed microfibers while they are manufactured, worn and disposed of, but especially when they are washed. A single wash load can release several million microfibers. Many factors affect how many fibers are released, including fabric type, mechanical action, detergents, temperature and the duration of the wash cycle. My research focuses on coastal ecology and water pollution, including work in New York and New Jersey marshes and estuaries that are heavily affected by human activities. Here are some things to know about reducing microplastic pollut...

People returning to what remains of the beachside town of Lahaina, Hawaii, and other Maui communities after one of the nation’s deadliest wildfire disasters face more dangers, beyond the 2,700 buildings destroyed or damaged and dozens of lives lost. The fires also left lingering health risks for humans and wildlife. When fires spread through communities, as we’ve seen more often in recent years, they burn structures that contain treated wood, plastics, paints and hazardous household wastes. They can burn vehicles and melt plastic water pipes. All of these items release toxic gases and particles. Many airborne pollutants fall to the ground, and when debris or dust is stirred up, hazardous particles can enter the air, where people can easily breathe them in. Chemicals can also contaminate water supplies. On Aug. 11, 2023, Maui County issued an “unsafe water” alert for areas of Lahaina and Upper Kula that were affected by wildfires, warning residents to u...

On Feb. 3, 2023, a train carrying chemicals jumped the tracks in East Palestine, Ohio, rupturing railcars filled with hazardous materials and fueling chemical fires at the foothills of the Appalachian Mountains. The disaster drew global attention as the governors of Ohio and Pennsylvania urged evacuations for a mile around the site. Flames and smoke billowed from burning chemicals, and an acrid odor radiated from the derailment area as chemicals entered the air and spilled into a nearby creek. Three days later, at the urging of the rail company, Norfolk Southern, about 1 million pounds of vinyl chloride, a chemical that can be toxic to humans at high doses, was released from the damaged train cars and set aflame. Federal investigators later concluded that the open burn and the black mushroom cloud it produced were unnecessary, but it was too late. Railcar chemicals spread into Ohio and Pennsylvania. The scene after a train carrying haz...

The Research Brief is a short take about interesting academic work. The big idea Consumer products released more than 5,000 tons of chemicals in 2020 inside California homes and workplaces that are known to cause cancer, adversely affect sexual function and fertility in adults or harm developing fetuses, according to our newly published study. We found that many household products like shampoos, body lotions, cleaners and mothballs release toxic volatile organic compounds, or VOCs, into indoor air. In addition, we identified toxic VOCs that are prevalent in products heavily used by workers on the job, such as cleaning fluids, adhesives, paint removers and nail polish. However, gaps in laws that govern ingredient disclosure mean that neither consumers nor workers generally know what is in the products they use. For this study we analyzed data from the California Air Resources Board (CARB), which tracks VOCs released from consumer products in an effort to reduce smog. The agen...

Headaches and lingering chemical smells from a fiery train derailment in East Palestine, Ohio, have left residents worried about their air and water – and misinformation on social media hasn’t helped. State officials offered more details of the cleanup process and a timeline of the environmental disaster during a news conference on Feb. 14, 2023. Nearly a dozen cars carrying chemicals, including vinyl chloride, a carcinogen, derailed on the evening of Feb. 3, and fire from the site sent up acrid black smoke. Officials said they had tested over 400 nearby homes for contamination and were tracking a plume of spilled chemicals that had killed 3,500 fish in streams and reached the Ohio River. However, the slow release of information after the derailment has left many questions unanswered about the risks and longer-term impact. We put five questions about the chemical releases to Andrew Whelton, an environmental engineer who investigates chemical risks during disasters....