Wastewater

In California's Central Valley, the oil industry has been dumping wastewater into unlined—and under-regulated—ponds, threatening the state's limited groundwater and the humans who rely on it.

• By Kate Wheeling

Big Sky, Montana, is looking to become one of a handful of cities to tackle its water shortage problem through snowmaking with sewage-treated water.

• By Matt Weiser

What you need to know about the sustainable alternative to desalination.

• By Wes Judd

A variety of oil and natural gas activities cause earthquakes, and mitigating the risks will require new tools and new openness from industry.

• By Nathan Collins