As the world warms, extreme weather events are becoming more frequent and intense, sea levels are rising, prolonged droughts are putting pressure on food crops, and many animal and plant species are being driven to extinction. It’s hard to imagine what we as individuals can do to resolve a problem of this scale and severity.

The good news: We are not alone. People, communities, cities, businesses, schools, faith groups and other organizations are taking action. We’re fighting like our lives depend on it — because they do.