Oscar award winner Leonardo DiCaprio said Tuesday that the recent spate of hurricanes is proof that the U.S. is harming itself by not taking climate change seriously.

The facts have been presented “time and time again, year after year, for decades” and “quite simply, we are knowingly doing this to ourselves, to our entire planet, and we’re risking our very future,” DiCaprio said in giving the closing address at the Yale Climate Conference hosted by former Secretary of State John Kerry.