Harvard Chan C-CHANGE makes climate change personal by connecting it to health and highlighting how climate solutions can provide for a healthier and more just world today and a livable future for our children.

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Cyclist in bike lane near pedestrians

Transportation, Equity, Climate, and Health

Transportation infrastructure investments could save hundreds of lives, billions of dollars: Boston University/Harvard Chan C-Change

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Climate Optimist Masthead

Your monthly dose of good news in climate change

The Climate Optimist brings you helpful tips and good news each month to help you stay focused on our shared mission to improve health by tackling climate change.

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Featured Issues

Child in front of sun

Climate, Kids, and Health

Showing how climate solutions and transitioning to clean energy protects children from dangerous pollutants and helps them live healthier lives today and in the future.

Masked girl using sanitizer

Climate Change and Infectious Disease

Reducing the risks of emerging infectious diseases by catalyzing actions that bring us back into balance with nature.

Dr. Aaron Bernstein with a patient

Climate MD

Engaging, supporting and empowering medical professionals to help turn awareness of the health threats posed by climate change into actions that improve health today

Featured News

pollution from a smokestack

Study: Fossil fuel air pollution linked to 1 in 5 deaths worldwide

“The big takeaway message here is that we have far more to gain from our health than we just realized yesterday from getting off fossil fuels,” —our Director Dr. Aaron Bernstein

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Pollen season grows 20 days in 30 years as climate crisis hits hay fever sufferers

Our Director Dr. Aaron Bernstein points to the worsening allergy season as one of many reasons for major climate action now.

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Blue sky with white clouds

Bolder climate action could save millions of lives each year by 2040

A new study estimates over 7 million lives per year could be saved through policies that facilitate better diets, cleaner air, and more walking and cycling.

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The ability to turn climate change around into an opportunity to create better public health for all communities is the opportunity we need to grab today.

- Gina McCarthy, Former Director, Harvard Chan C-CHANGE