In a speech on climate change to Georgetown University on Tuesday, President Obama touted his administration’s efforts to promote natural gas, including fracking, and strongly hinted that he would approve the Keystone XL pipeline project.

In the speech, Obama warned environmentalists that his clean energy projects would be limited in the near-term: “This does not mean we are going to suddenly stop producing fossil fuels. Our economy would not work very well if we did. Transitioning to a clean energy economy takes time.”