Thousands of earthquakes in the U.S. are being caused not by fracking, but by an oil and gas development process you may never have heard of: wastewater disposal. It doesn't have to be this way.

Producer: Elisa Gutiérrez

Illustrators: Grace Berrios and Jackie Albano

Animator: Alexa Ledesma

Sound: Carlos Hurtado

Supervising Producer: Allie Jaynes

Executive Producer: Michelle Nash