The Canadian company that had been pushing for approval to build the project is asking for a timeout in the review process. Here's what you should know.
Nearly 200 countries have delegates in Bonn, Germany, this week, trying to figure out how to fight global warming. They're at a difficult point — what the nations have pledged so far isn't enough.
The Environmental Protection Agency is accusing Volkswagen of intentionally dodging clean air rules on nearly half a million vehicles in the U.S. The EPA says Volkswagen installed software called a "defeat device" that only runs full pollution controls during official emissions testing. Under normal driving conditions, the vehicles emit nitrogen oxides at up to 40 times allowable levels, according to the EPA.
Oklahoma set a state record last year with more than 5,000 earthquakes. This year, the state is poised to have even more. Now oil and gas regulators have taken notice and are working to curb them.
The bust of the coal-bed methane industry has left Wyoming responsible for the exorbitant cost of plugging thousands of wells. The price tag for dealing with deep oil and gas wells may be even higher.
NPR's Kelly McEvers talks to Erika Solomon of the Financial Times about why it's been so challenging to disrupt the Islamic State's oil production in territory it controls in northern Syria and Iraq.
Shell spent 10 years and $7 billion preparing for an offshore drilling operation in the Arctic. But after a disappointing test well, the company says it's giving up, for now.