Bakken formation

Demonstrators against the Dakota Access oil pipeline block a road near North Dakota's Standing Rock Reservation in October. The pipeline would cross historic Native land and pass under the Missouri River, the source of the local water supply.

It’s not just about a pipeline. Native activists say Dakota battle is their biggest stand in decades.

Environment

Clashes over an oil pipeline slated to cross historic Native territory in North Dakota continue after more the 140 people were arrested in protests last week. The increasingly high-stakes face-off is one of the biggest actions by Native Americans in years.

Under the new federal fracking rules, wastewater must be managed onsite and in closed tanks, not in the open pits seen here.

Fracking is about to change, and almost no one is happy about it

Environment