These are the best protest signs from today's March for Science

Impact
By Eric Lutz

The March for Science got underway in Washington, D.C., as well as across the nation and around the world Saturday. Thousands of protesters, in about 500 cities worldwide, were expected to turn out to celebrate science and protest President Donald Trump, a climate-change denier who recently reversed Obama-era environmental initiatives and installed an anti-Environmental Protection Agency crusader, Scott Pruitt, as head of the EPA — among other anti-science measures. 

Here are some of the best signs from the marches challenging Trump to embrace science.

David Zalubowski/AP
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FRANCOIS GUILLOT/Getty Images
Mic/Will Drabold
Mic/Will Drabold

April 22, 2017, 2:00 p.m. Eastern: This story has been updated.