Where we live, eat, work, and play profoundly influences our health.
Generation Chemical: How Environmental Exposures are Affecting Reproductive Health and Development

Learn from top scientists and experts on the impact of environmental exposures and toxics on reproductive health, pregnancy, and development.

We envision a world free from environmental risks that harm our health.

CHE cultivates a learning community based on the latest, peer-reviewed science to share knowledge and resources and to improve individual and collective health.


Hear the latest environmental health science.

Because Health

Articles and tips for limiting your environmental health risks.

A Story of Health

Learn about disease origins and prevention for health care providers.

Toxicant and Disease Database

Explore the links between chemicals and human diseases.

Upcoming Webinars

CHE Cafe: Exploring the Past, Present & Future of Environmental Health

September 8, 2022 —   To mark the 20th anniversary of the Collaborative on Health and Environment (CHE), we are hosting a series of informal, online conversations with leading thinkers, researchers and innovators in the field of . . .

Exposure to Per- and Polyfluoroalkyl Substances and Markers of Liver Injury

September 14, 2022 — Per- and polyfluoroalkyl substances (PFAS) are very persistent and ubiquitous in our environment. They are used in many industrial and consumer products and bioaccumulate in the food chain and in humans. During this . . .

More webinars


What’s New

CHE at 20: Amplifying Science, Partnering for Health

Jul 28, 2022— What an interesting moment it’s been to step into leadership at Commonweal’s Collaborative on Health and the Environment (CHE). Our 20th anniversary year offers opportunities for celebration, reflection, and renewal—all of which are well underway.

Co-founder Steve Heilig offered this thought piece earlier this summer, highlighting the story of CHE’s origins and some key accomplishments.

As you’ll see, there are many! From launching the first academic program in the United States on reproductive health and the environment, to creating an award-winning ebook on environmental determinants of health, to building a Toxicant and Disease Database for researchers and the Because Health website for consumers, CHE has made many contributions to the environmental health community over the years.  . . .

Healthier Humans on a Healthier Planet

Jun 17, 2022— Some people identify as environmentalists, some as health professionals, some as scientists, some as people affected by diseases thought to be at least partly related to environmental factors such as industrial or other chemicals, and some who are any combination of these identities. Twenty years ago, some of us at Commonweal decided that all these diverse people might benefit from talking with each other more—and by working for a healthier future as well.

Commonweal founder Michael Lerner had already thought much about environmental health, as had a small group of others with great relevant expertise in our circles. Michael wrote a thoughtful essay titled “The Coming Age of Environmental Health” and we all began talking about how we might work together, with the aim of closer communication among environmental scientists, advocates, health professionals, patient groups, and more. I recall a long beach walk where Michael and I talked about how we might turn such ideas into action, pending some first funding. I agreed to pitch in, bringing the organized medical community in as a co-sponsor. And soon, some funds in hand, we were off and running.  . . .

A Tribute and a Welcome

Jun 13, 2022—

Dear CHE Friends,

In the 20 years since we co-founded the Collaborative on Health and the Environment, we have benefited from exemplary leadership from a number of gifted people. The most recent is Hannah Donart, who has done remarkable work, first as deputy to Karen Wang, and more recently as CHE Director in her own right.

One of the most fundamental gifts Hannah brought to CHE is her profound commitment to environmental health science as her dedicated career path. She trained for this work and intends to pursue it throughout her career.

A second gift Hannah brought to CHE is her deep passion for environmental justice and commitment to amplifying the voices of a whole new generation of environmental health scientists coming from minority and disproportionately impacted communities. She has done precisely that.  . . .

Announcing New Webinar Series on Effects of Plastic on Health

Oct 26, 2018— We are excited to announce a new four-part webinar series looking into the effects of plastic on health. Over the next four months, we will be joined by leading scientists, health professionals, policy experts, and advocates to talk about the various impacts of plastics on public health.  . . .

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We are educating new audiences about the connections between the environment and human health.

We hope to build a groundswell of demand for prevention-focused behaviors and policies, as well as economic and legal structures that protect public health.