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Environmental health – Analysis and Comment

As suburbs encroach on farmland, residents’ risk of exposure to farm chemicals rises. Carly Hyland

Glyphosate, the active ingredient in the weedkiller Roundup, is showing up in pregnant women living near farm fields – that raises health concerns

New research provides evidence for the first time that the primary chemical in Roundup is reaching people in nearby homes, and it isn’t just from the food they eat.
Canals carry PFAS into Miami’s Biscayne Bay. Art Wager/E+ via Getty Images

PFAS ‘forever chemicals’ are getting into ocean ecosystems, where dolphins, fish and manatees dine – we traced their origins

Scientists found PFAS hot spots in Miami’s Biscayne Bay where the chemicals are entering coastal waters and reaching the ocean. Water samples point to some specific sources.
One symptom of arsenic poisoning is the growth of plaques on the skin called arsenical keratosis. Anita Ghosh/REACH via Flickr

Arsenic contamination of food and water is a global public health concern – researchers are studying how it causes cancer

Millions of people worldwide are exposed via soil and water to arsenic, whether naturally occurring or related to pollution. Chronic exposure is linked to the formation of cancer stem cells.
A new federal regulation will set national limits on two ‘forever chemicals’ widely found in drinking water. Thanasis Zovoilis/moment via Getty Images

Regulating ‘forever chemicals’: 3 essential reads on PFAS

The Biden administration is finalizing the first federal limits on two compounds, PFOA and PFOS, in drinking water. These so-called ‘forever chemicals’ have been linked to numerous health effects.
Most clinical trials overrepresent young white males. Andresr/Digital Vision via Getty Images

Lack of diversity in clinical trials is leaving women and patients of color behind and harming the future of medicine – Podcast

Medicine works better when the treatments are tailored to fit each individual person’s biology and history. A first step is increasing diversity in clinical trials, but the end goal is precision medicine.
When fish like this netted cod are exposed to mercury, it accumulates in certain organs, including the lenses of their eyes. Yvette Heimbrand

The lenses of fishes’ eyes record their lifetime exposure to toxic mercury, new research finds

A new study shows that a time stamp can be put on mercury that accumulates in fish eyes, offering a window into their lifetime exposure.
Bad air pollution and extreme heat each raise health risks, but they’re worse combined. Brian van der Brug/Los Angeles Times via Getty Images

Extreme heat and air pollution can be deadly, with the health risk together worse than either alone

The worst effects are during high nighttime temperatures, something happening more often with climate change. Wildfire smoke adds to the risk.
A burned ‘Caution: Children at play’ sign remained after a wildfire devastated the town of Berry Creek, Calif., in 2020. Carolyn Cole/Los Angeles Times via Getty Images

US climate risks are rising – a scientist looks at the dangers her children will have to adapt to, from wildfires to water scarcity

The author’s 9-year-old son will likely face about four times as many extreme events in his lifetime as older adults today. An international report explains the impacts already being felt.