Scientists and science supporters braved rainy weather during the March for Science in Washington, D.C.
Filing onto the National Mall
Marchers file onto the National Mall for the March for Science in Washington, D.C., on April 22, 2017.
T. rex sighting
A T. rex invades the National Mall during the 2017 March for Science in Washington, D.C.
Channeling "Rick and Morty"
Thomas Bloom from Alexandria, Virginia, dressed as Rick Sanchez from the animated sci-fi show "Rick and Morty."
Gearing up to protest
Physician Sam Bender (right) prepares for the March for Science with his wife, Ellen (left), who says she is the mother of a future scientist.
Scientists and supporters attend a pre-rally at the American Association for the Advancement of Science building before heading to the National Mall for the March for Science on April 22, 2017 in Washington, D.C.
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Denise Chow was the assistant managing editor at Live Science before moving to NBC News as a science reporter, where she focuses on general science and climate change. Before joining the Live Science team in 2013, she spent two years as a staff writer for Space.com, writing about rocket launches and covering NASA's final three space shuttle missions. A Canadian transplant, Denise has a bachelor's degree from the University of Toronto, and a master's degree in journalism from New York University.