Signs that can be held up in a picture with a large globe are seen on a table at NASA's Earth Day event on Monday, April 22, 2019, at Union Station in Washington, D.C. Photo Credit: (NASA/Joel Kowsky)
Signs that can be held up in a picture with a large globe are seen on a table at NASA's Earth Day event on Monday, April 22, 2019, at Union Station in Washington, D.C. Photo Credit: (NASA/Joel Kowsky)