As fracking companies go bankrupt, they leave wells leaking methane and other dangerous substances, and there are no plans to clean them up.

If this were the only bad thing about fracking, one possible solution in principle would be to require the company to post a bond to clean up the well, before starting it. However, as reported in Collapse, by Jared Diamond, this system has problems in practice when dealing with abandoned coal mines in Montana.

Anyway, fracking has other big problems (globally, CO2 from burning the gas, and locally, pollution of water sources) and it is taking us to frack and fruin. Fracking should be entirely forbidden.

*Livestock farming and fossil fuels could drive 4C global heat rise.*