Thousands of people are expected to protest Saturday in Washington, D.C., and in cities around the world in March for Science events timed for Earth Day.
The rallies are intended to promote popular interest in science, recognize scientific achievements, and protest the Trump administration's proposed cuts to research funding as well as policy-making around issues like climate change which marchers argue disregards the best available evidence. Some scientists have criticized the marches, expressing worry that science as a discipline will be negatively politicized.
Bill Nye the Science Guy is among the speakers scheduled to appear at the main event in Washington. Other events are planned in London, Germany, New Zealand, Australia, and beyond.