Research

We work closely with subject matter experts to bring you breakthrough research that you can count on. Explore our data-driven publications and reports.

Featured

Woman with curly hair checking her phone while holding a skincare product.

Cosmetics

Higher hazards persist in personal care products marketed to Black women, report reveals

Out of 4,011 personal care products marketed to Black women, only 21 percent rate as low hazard in EWG’s Skin Deep® cosmetics database according to this newly updated EWG analysis co-authored with BLK...

February 11, 2025

Water

PFAS Chemicals

Getting ‘forever chemicals’ out of drinking water: EWG’s guide to PFAS water filters

Taking ‘forever chemicals’ out of drinking water: EWG’s guide to PFAS water filters. Discover the most effective water filters for reducing PFAS contamination in your water. EWG's extensive tests...

July 11, 2023

Food

Children’s Health

Pesticides

Chlormequat

EWG investigation: Dangerous agricultural chemical chlormequat found in popular oat-based products

A new EWG investigation finds for the first time troubling concentrations of the toxic agricultural chemical chlormequat in oat-based products sold in the U.S., including everyday brands marketed to...

January 31, 2023

All Research

Displaying 25 - 27 of 27

California

Drilling Doublespeak: Slideshow

December 12, 2011

As natural gas development has pushed into populated areas, gas drillers have consistently disclosed to shareholders and potential investors daunting lists of possible mishaps, including leaks, spills...

California

Cracks in the Facade

August 3, 2011

An Environmental Working Group investigation by Senior Counsel Dusty Horwitt has uncovered evidence in a long-forgotten federal report and other documents that chemicals from hydraulic fracturing of...

California

Federal & State Energy Policy

Gas Drilling and Fracking

June 30, 2011

Hydraulic fracturing has been around for decades. But now, natural gas producers are deploying a new gas drilling method called high-volume horizontal hydraulic fracturing to release gas locked in...

Expert Spotlight

Chemical companies provide quarterly reports on production and sales figures to shareholders. Why shouldn’t the public and EPA receive similar reports every year about commonly used chemicals, some of which could pose a serious health risk?”

David Andrews, Ph.D.

Acting Chief Science Officer

All Experts

News & Insights

Food

Food Chemicals

California

States, not the FDA, are now the front lines of food safety

March 19, 2026

Evidence keeps mounting about the health risks of common food chemicals. At the same time, Americans are waking up to the fact that the federal government not only doesn’t vet the chemicals used in...

Food

Ultra-Processed Foods

Natural and artificial flavor: What's the difference?

March 19, 2026

If you’ve studied ingredient labels and been mystified by “natural flavor” and “artificial flavor,” you’re not alone. These vague terms suggest a big gap in quality, but the reality is more complex...

Map of the United States with states highlighted in green.

Food

Food Chemicals

California

Interactive map: Tracking state food chemical regulation in the U.S.

March 18, 2026

Thousands of chemicals are allowed for use in food sold in this country. And while most of these are likely safe to eat, some have been linked to serious health harms.

Photo of two children sitting and eating salads from lunchboxes

Food

Ultra-Processed Foods

6 real policies to help people eat real food

March 12, 2026

Health and Human Services Secretary Robert F. Kennedy Jr. kicked off the “Eat Real Food” campaign last month, promising a series of food and nutrition policy changes to “Make America Healthy Again.”

So...

Search

Key Issues

Women's Health

Food Chemicals

Research

Higher hazards persist in personal care products marketed to Black women, report reveals

Getting ‘forever chemicals’ out of drinking water: EWG’s guide to PFAS water filters

EWG investigation: Dangerous agricultural chemical chlormequat found in popular oat-based products

Areas of Focus

Drilling Doublespeak: Slideshow

Cracks in the Facade

Gas Drilling and Fracking

David Andrews, Ph.D.

Natural and artificial flavor: What's the difference?

FDA reports over 50 PFAS ingredients intentionally added to 1,700 personal care products

EWG comments on the U.S. Environmental Protection Agency July 2025 announcement regarding perchloroethylene regulation under the Toxic Substances Control Act

Fluoride in drinking water: What we know about its safety and risks

States, not the FDA, are now the front lines of food safety

Natural and artificial flavor: What's the difference?

Interactive map: Tracking state food chemical regulation in the U.S.

6 real policies to help people eat real food

Key Issues

Research

Areas of Focus

Related Articles

Articles by David Andrews, Ph.D.