What’s in tattoo ink? My team’s chemical analysis found ingredients that aren’t on the label and could cause allergies

Some tattoo inks contain unlabeled materials that can cause allergic reactions.

John Swierk, Assistant Professor, Chemistry, Binghamton University, State University of New York • conversation
March 22, 2024 ~7 min

50 years after the Bunker Hill mine fire caused one of the largest lead-poisoning cases in US history, Idaho's Silver Valley is still at risk

A fire and decades of silver and lead mining created the largest contiguous Superfund site in the nation in what today is one of the fastest-growing states. It includes popular Lake Coeur d’Alene.

Martin Schiavenato, Assistant Professor of Nursing, Gonzaga University • conversation
Aug. 30, 2023 ~11 min


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.

Diana Azzam, Assistant Professor of Environmental Health Sciences, Florida International University • conversation
June 5, 2023 ~5 min

What is listeria? A microbiologist explains the bacterium behind recent deadly food poisoning outbreaks

Listeria causes serious illness and food recalls nearly every year.

Yvonne Sun, Assistant Professor of Microbiology, University of Dayton • conversation
Aug. 19, 2022 ~10 min

How to destroy a 'forever chemical' – scientists are discovering ways to eliminate PFAS, but this growing global health problem isn't going away soon

PFAS can be filtered, but getting rid of the chemicals is a monumental challenge. A new breakthrough offers some hope.

Hui Li, Professor of Environmental and Soil Chemistry, Michigan State University • conversation
Aug. 18, 2022 ~8 min

Flood maps show US vastly underestimates contamination risk at old industrial sites

Climate change is colliding with old factory sites where soil or water contamination still exist, and the most vulnerable populations are particularly at risk.

Scott Frickel, Professor of Sociology and Environment and Society, Brown University • conversation
Aug. 1, 2022 ~10 min

Moon: crashing rocket will create new crater – here's what we should worry about

Some people are outraged that human negligence will disfigure the Moon. But that’s not the main issue.

David Rothery, Professor of Planetary Geosciences, The Open University • conversation
Jan. 28, 2022 ~7 min

Ancient groundwater: Why the water you're drinking may be thousands of years old

As surface water diminishes in the Western US, people are drilling deeper wells – and tapping into older groundwater that can take thousands of years to replenish naturally.

Kevin M. Befus, Assistant Professor of Hydrogeology, University of Arkansas • conversation
Oct. 7, 2021 ~10 min


The water you're drinking may be thousands of years old – growing demand for deeper wells is tapping ancient reserves

As surface water diminishes in the Western US, people are drilling deeper wells – and tapping into older groundwater that can take thousands of years to replenish naturally.

Kevin M. Befus, Assistant Professor of Hydrogeology, University of Arkansas • conversation
Oct. 7, 2021 ~10 min

Wildfires are contaminating drinking water systems, and it's more widespread than people realize

An increasing number of communities are discovering dangerous contamination in their water systems weeks or months after fires.

Andrew J. Whelton, Associate Professor of Civil, Environmental & Ecological Engineering, Director of the Healthy Plumbing Consortium and Center for Plumbing Safety, Purdue University • conversation
May 6, 2021 ~9 min

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