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Juniors and seniors from environmental science classes at Elizabeth Seton High School, a girls school in Bladensburg, Maryland, stand with their climate change signs along Constitution Avenue in Washington Sept. 20, 2019, as they prepare to join a march with thousands of others to the front of the U.S. Capitol. (CNS/Carol Zimmermann)
Juniors and seniors from environmental science classes at Elizabeth Seton High School, a girls school in Bladensburg, Maryland, stand with their climate change signs along Constitution Avenue in Washington Sept. 20, 2019. (CNS)