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Demonstrators carry signs outside of the Trump International Hotel and Tower during the March for Science rally on Earth Day in New York, U.S., on Saturday, April 22, 2017. The March for Science is a nonpartisan rally bringing together scientists, science supporters, teachers and parents, along with politicians with an aim to advocate the role of science in education and informing evidence-based policies within the public interest. Photographer: Kholood Eid/Bloomberg via Getty Images

Demonstrators carry signs outside of the Trump International Hotel and Tower during the March for Science rally on Earth Day in New York, U.S., on Saturday, April 22, 2017. The March for Science is a nonpartisan rally bringing together scientists, science supporters, teachers and parents, along with politicians with an aim to advocate the role of science in education and informing evidence-based policies within the public interest. Photographer: Kholood Eid/Bloomberg via Getty Images