Credit: The American Chemical Society

Tens of thousands of people gathered in Washington, D.C., and many more at hundreds of satellite marches around the world on Saturday to join the first March for Science.

In the latest episode of Speaking of Chemistry, we followed two groups of from Minnesota and New Jersey to get a of the hopes and concerns that brought them to the U.S. capital to join people from across the nation—and the globe—in the March for Science.

Watch it here: