Brief

The Harvard Climate Brief brings Harvard faculty expertise on climate change and sustainability to the wider world. Authors’ views are their own. Republish.

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Smokestacks at sunset

Ignoring lifesaving when regulating air pollution: An explainer

The Trump administration says it will no longer quantify the health benefits of reduced air pollution. Here’s what that means and why it matters.
Health Law & Policy
Wed, Jan 21, 2026
Sunset silhouette of smokestack carbon emission plumes at a coal fired power plant in Wyoming

Clean air rules save lives, and are required by law

What are the legal risks and health consequences of the Trump administration’s proposals to eliminate two clean air regulations for power plants? A lawyer and doctor explain.
Health Law & Policy
Tue, Jul 22, 2025
lung doctor

Breathe easier? Not without the science 

By canceling a multi-year study of older people with lung disease – a few months before it was due to end – the Trump administration has left patients without help, doctors without answers, and wasted taxpayer dollars.
Health
Fri, May 16, 2025
Emergency hospital

Climate change is threatening patient care—Here’s how clinics can adapt

An emergency doctor outlines how his team is helping clinics across America prepare for climate disasters.
Health
Tue, Apr 22, 2025
Men on motorbike in sunshine

The history of heat waves reveals the urgency of adaptation

The relationship between humans and heat continues to change. Heat waves, once simply a natural phenomenon, are now a symptom of urbanization and global warming.
Health
Thu, Mar 20, 2025
Women in Ahmedabad

The impacts of heat on lives and livelihoods are far-reaching but poorly understood

With more data on the wide-ranging effects of heat, we can start to identify cost-effective and culturally relevant interventions for adaptation.
Health
Fri, Mar 14, 2025

How exposure to wildfire smoke impacts human health now, soon, and later

The unprecedented Los Angeles fires threaten the health of millions of residents. Two leading biostatisticians unpack the risks in the short- and long-term.
Health
Tue, Jan 21, 2025

How future heat may kill millions of healthy people

Even healthy people cannot survive the extreme heat beginning to afflict large regions of the world, writes climate scientist Kaighin McColl, explaining his new research into uncompensable heat stress.
Health
Thu, Dec 12, 2024

All perspectives expressed in the Harvard Climate Brief are those of the authors and not of Harvard University or the Salata Institute for Climate and Sustainability. Any errors are the authors’ own. The Harvard Climate Brief is edited by an interdisciplinary team of Harvard faculty.