Demonstrators in support of the March for Science walk in Pasadena, Calif., Saturday, April 22, 2017.
Demonstrators in support of the March for Science walk in Pasadena, Calif., Saturday, April 22, 2017. John Antczak AP
Demonstrators in support of the March for Science walk in Pasadena, Calif., Saturday, April 22, 2017. John Antczak AP