Articles by Bill Walker, David Andrews, Ph.D.

Chemical Companies’ ‘Voluntary’ Clean Ups Are Little More Than Corporate Spin

Last week Chemours – a DuPont spinoff company that inherited liability for some of its parent's nastiest toxic messes – announced "voluntary actions" to clean up and eliminate pollution from a highly...

Triclosan: Not Safe, Not Effective

The time has come to wash our hands of triclosan and other unnecessary antimicrobial chemicals for good.

If You Are What You Eat, Are We Making Children Nonstick?

According to the Centers for Disease Control and Prevention, on any given day one in three American children – no matter their age, race or family income – eat fast food. Hamburgers, french fries...

Nonstick Chemicals: A Hydra-Headed Family of Toxic Compounds

Banning or restricting toxic chemicals one at a time is like fighting the mythical hydra: For each head cut off, multiple replacements appear that may be just as hazardous. There's no better example...

Scientists in N.J., Germany Support 'No Safe Level' of Teflon Chemical in Drinking Water

PFOA, a carcinogenic chemical formerly used to make DuPont's Teflon, contaminates drinking water for at least 7 million Americans and is in virtually everyone's blood.

'Erin Brockovich' Chemical in Drinking Water of More than 200 Million Americans

Drinking water supplies for two-thirds of Americans are contaminated with the carcinogenic chemical made notorious by the film "Erin Brockovich," which was based on the real-life poisoning of tap...

How Sunscreen Makers Spoof the SPF System

I keep a bottle of Banana Boat Sport SPF 100 on my desk. But I am not convinced it deserves more than a SPF 15, or maybe 30, rating. A chemist specializing in sunscreen chemicals, I run a sunscreen...

New Studies Trace PFC Pollution from Sources to the Next Generation

Fluorine-based chemicals that can cause cancer, developmental toxicity and numerous other detrimental health effects have contaminated the drinking water of millions of Americans, and the blood of...

Drinking Water for 5.2 Million People Tainted by Unsafe Levels of PFCs

Drinking water supplies serving more than 5.2 million Americans may be contaminated with two perfluorinated chemicals, or PFCs, at levels higher than the Environmental Protection Agency now deems safe...

New EPA Guidelines on PFCs Welcome – but Still Fall Short

Today the Environmental Protection Agency issued a long-awaited drinking water health advisory for the perfluorinated chemicals PFOA and PFOS. But EPA's advisory falls far short of what's needed to...

UPDATE: Is Toxic Teflon Chemical in Your Drinking Water?

The bad news about a toxic chemical used to make Teflon keeps getting worse.

Is Your Drinking Water Contaminated with Toxic Non-stick Chemicals?

When you drink a glass of water, you expect it to be clean and pure, not contaminated with invisible toxic chemicals. But nationwide testing has found that 6.5 million Americans in 27 states are...

Got sunscreen? Great – but keep your shirt on.

By now most of us know to wear sunscreen at the beach or during other outdoor activities. But some people mistakenly think wearing sunscreen makes them immune from sunburn, which can lead to skin...

Teflon-Killing Canaries and the American Dream

As a new EWG report shines a light on DuPont's poisoned legacy in the mid-Ohio River Valley, it's a good time to look back at Teflon's canary effect.

There is Nano-WHAT in My Food?

Are intentionally engineered nanoparticles being added to our food? We don't know for sure – and federal food regulators aren't helping us find out the truth.

What Would It Take for the EPA to Test Every Major Chemical for Safety?

As the Congressional debate over how to fix the failed Toxic Substances Control Act heats up, we have to ask: What would it take for the U.S. Environmental Protection Agency to assess the safety of...

How American Industry Skips Some Chemical Safety Checks

American industry often avoids the federal government's chemical safety checks in an unexpected way, by relying on chemicals “grandfathered” by the 1976 Toxic Substances Control Act, according to a...

Rate Your Plate Series: Natural vs. Artificial Flavors

“Natural flavor” is the fourth most common ingredient listed in EWG's Food Scores, which rates more than 80,000 foods on their degree of nutrition, ingredient concerns and processing concerns. But...

Rate Your Plate Series: Natural vs. Artificial Flavors

“Natural flavor” is the fourth most common ingredient listed in EWG's Food Scores, which rates more than 80,000 foods on their degree of nutrition, ingredient concerns and processing concerns. But...

FDA is trying (again) to clean up your hand soap

The federal Food and Drug administration has announced proposed rules that could drive unnecessary and potentially dangerous products from the market -- antibacterial hand soaps like those marketed by...