Scientists, students and research advocates rallied at the Washington Monument on Saturday during the March for Science.
People arrive at the March for Science event near the Washington Monument on Saturday.
Conall Spaur from Howell, N.J., holds a sign while waiting in line for a teach-in on climate change at the March for Science event in Washington, Saturday, April 22, 2017. Thousands of scientists worldwide left their labs to take to the streets Saturday along with students and research advocates in pushing back against what they say are mounting attacks on science. (AP Photo/Sait Serkan Gurbuz)
Thousands of demonstrators showed up for the March for Science in Berlin on Saturday.
People protest in London's Parliament Square during the March for Science.
A woman with a poster attends with thousands of demonstrators the March for Science in Berlin on Saturday.
Thousands of demonstrators attend the March for Science in Berlin on Saturday.
Nation & World 
