Fracking also releases radioactive radon from the ground - https://www.sciencedaily.com/releases/2019/06/190618083347.htm https://www.sciencedaily.com/releases/

Fracking also releases radioactive radon from the ground - https://www.sciencedaily.com/releases/2019/06/190618083347.htm https://www.sciencedaily.com/releases/2019/06/190618083347.h... However, as regulations consider it "natural" (it wasn't man-made, although it was released as a result of human activity), frackers are not required to do anything about it. So we have a repeat of the tragedy of diluted pollution - as long as your pollution is invisible and evenly distributed (like radioactive waste from coal plants), nobody cares. But concentrate it instead of releasing it to the environment, and there's public outrage (high-level nuclear waste).