Given the crisis facing nature, it is all too easy to give up hope.

Yet, around the globe we are winning the fight to protect the natural world. Deforestation is slowing down. Wetlands are being rebuilt. Numbers of some of our rarest creatures are on the rise. People are making this change happen.

Stand with us to celebrate Earth Day, learn what is working in conservation and why.

Discover how every one of us can become more involved
in the fight to protect the natural world as we join hands with people around the world in a global movement of


Stories of Hope

The day will be filled with inspiring talks by leading conservationists, popular naturalists, and celebrity figures.

Solutions Fair

Conservation cannot succeed through experts alone. Your support and the decisions you make about your day-to-day lives are critical for success.


Everyone is welcome at #EarthOptimism Cambridge, and all events are free to attend.

#EarthOptimism around the world

#EarthOptimism Cambridge is just one of a series of events taking place around the world on Earth Day 2020.

Have a look at the sister events happening across the world on the interactive map from the Smithsonian Conservation Commons.

Sponsors of #EarthOptimism

#EarthOptimism Cambridge would not be possible without the generous support of our sponsors:


Looking forward to a future full of sustainable cities. #EarthOptimism

Twitter feed video.Looking forward to a future full of sustainable cities. #EarthOptimism

Mike Hudema@MikeHudema

India is building one of the most sustainable cities in the world. 60% of the city will be green space or water, the buildings will be powered by #solarenergy, and it will create nearly half a million jobs!

We have solutions to the #climate crisis. Let's start implementing them

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