Frack to the Future.

The article discusses Texas start-ups' use of hydraulic fracturing technologies to shift to cleaner energy in 2021. Topics covered include the mechanics of saving underground water and forcing it to the surface to spin a turbine to generate electricity, and the Quidnet company's early funding for its battery idea from the climate fund Breakthrough Energy Ventures. Also noted is the geothermal industry's consideration of oil and gas as a source of new technology.