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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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contrails

Understanding and addressing “chemtrails”

In the wake of the coronavirus, people concerned about government control over vaccines and pandemic responses began to organize against geoengineering. A sociologist studying environmental governance explores how to confront their concerns without validating conspiracy thinking.
Geoengineering Transportation
Wed, Jun 25, 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
windmills

The 2025 Tax Debate and Clean Energy Investment

An economist surveys the potential fiscal and environmental implications of eliminating IRA clean-energy spending.
Climate Policy
Wed, May 14, 2025
Dump and smokestacks

Why we are rescuing government environmental data

Volunteers are preserving tools and data that the Trump administration is discarding, but we are no replacement for the centralized management and distribution of a public good.
Justice
Wed, Apr 30, 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
Cows

How Brazil’s “China cows” lower methane emissions

Because Brazilian cattle spend longer reaching market weight than cows in the U.S., they belch out more than three times as much methane for every pound of meat. Restoring degraded pastures is helping.
Methane
Mon, Apr 14, 2025
powerlines

How you subsidize Big Tech with your electricity bill

Utilities are forcing consumers to fund discounts for data centers, explain two researchers at the Harvard Electricity Law Initiative.
Energy Law & Policy
Mon, Apr 7, 2025
Highways

Unpacking Trump’s EV policy overhaul

By modeling different proposed changes to EV policy, two Harvard economists calculate impacts on adoption, emissions, and federal spending.
Law & Policy Transportation
Mon, Mar 31, 2025

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.