20 Champions Of Climate Change

Even in the face of overwhelming scientific evidence, climate change still has its doubters. But luckily for all of us, plenty of powerful people around the world have dedicated themselves to speaking out about the risks it poses and the need to address it.

Some of these prominent voices, such as President Barack Obama, the pope, and Bill Nye, you already know. But here are 20 other important activists — who include scientists and actors, as well as political and business leaders — from around the world.

Scroll down to check them out, and add the names of your favorite activists in the comments below:

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