WATCH LIVE: Scientists march on Washington -- and around the globe -- to send Trump a message on Earth Day
Planet Earth (shutterstock)

Live coverage of Saturday's "March for Science" is set to start at 10 a.m EST in Washington, DC and is expected to feature celebrities and activists -- as well as scientists. And while it's officially a non-partisan affair, you can expect to see speakers highly critical of Trump and the GOP's largely anti-science policies.