What events influenced the growth of the environmental movement in the united states

The events that might triggered the to do more environmental movements include the effects of DDT on the environment and a river in Ohio was on fire because of the pollution present. It is a good thing though because, in the end, everything we do to the environment will have and will always have an effect on us living in this planet.

Ihaven't done that yet, so no idea,but this is not the right place to ask