Colvin was one of five plaintiffs in the first federal court case filed by civil rights attorney Fred Gray on February 1, 1956, as Browder v. Gayle, to challenge bus segregation in the city. In a United States district court, she testified before the three-judge panel that heard the case.
<h3>Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.</h3><h3 />
