Rachel Shaffer

Marc Shaffer, Rachel M. Shaffer: Science saves lives
Credit: New York National Guard

Marc Shaffer, Rachel M. Shaffer: Science saves lives

Whether tackling viruses or air pollution, we need to end the attack on science and truth.

"Nothing is so frightening as what's behind the closed door... The audience holds its breath along with the protagonist as she/he (more often she) approaches that door.

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Essay: Biking in dirty air
Credit: Alex Kritchevsky

Essay: Biking in dirty air

I see toxic chemicals everywhere.

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Can low doses of chemicals affect your health? A new report weighs the evidence.

Toxicology’s founding father, Paracelsus, is famous for proclaiming that “the dose makes the poison.” This phrase represents a pillar of traditional toxicology: Essentially, chemicals are harmful only at high enough doses.

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PFAS in food

IN-DEPTH: What we know about PFAS in our food

Amid inadequate testing and a lack of regulation, we’re all eating “forever chemicals.”

invasive species

Peter Dykstra: American Invasive Species Hall of Fame, part 1

Flora and fauna that have left their mark.

Global Warming: Why the problem is worse – and solutions simpler – than you thought

Global Warming: Why the problem is worse – and solutions simpler – than you thought

Noted ecologist John Harte offers a fresh take on the dire topic of climate change.

ryan zinke

Peter Dykstra: Low crimes and misdemeanors

Multiple ethical violations used to mean bipartisan disdain. Now you get sent to Congress.

PFAS Testing

Investigation: PFAS on our shelves and in our bodies

Testing finds concerning chemicals in everything from sports bras to ketchup, including in brands labeled PFAS-free.

PCB pollution

Most of the world agreed on safe PCB waste disposal. It’s not going great—especially in the US.

Just 13% of countries in the Stockholm Convention have disposed of the toxics according to global environmental standards.