Climate action is already changing lives — quietly, steadily, across the world. Cleaner air in crowded cities. More reliable energy in rural communities. Safer homes. Healthier food systems.

As temperatures rise and storms grow more destructive, the response to climate change is becoming more than an effort to cut emissions. It is reshaping economies, improving public health and helping communities adapt to a warming world.

The window to avoid the worst consequences of climate change is narrowing, but it has not yet closed. Whether you are a professor or policymaker, a corporate executive or concerned citizen, we all have a role to play in building a more livable future.

This guide was prepared by UN Environment Programme to share ideas for how individuals, companies, governments and others can tackle climate change.