When the Keystone Pipeline burst last week, half of an Olympic-sized swimming pool’s worth of a particularly dirty fossil fuel spilled into wetlands in North Dakota. And the thick liquid, known as tar sands oil, will be nearly impossible to clean up.

EPA.gov pages that previously provided information about climate change have been changed from claiming that they are "updating" to an error message that reads, "We want to help you find what you are looking for," as revealed by a report released this week by the Environmental Data & Governance Initiative. The change indicates that information related climate change is not being “updated,” but removed entirely.