Vermont Sen. Bernie Sanders compared “climate change” to an “asteroid hitting the earth” in a tweet posted Friday.

The tweet goes after Scott Pruitt, the head of the Environmental Protection Agency (EPA) under President Trump.

Scott Pruitt, the head of the EPA, thinks that climate change could potentially be good for humans. Does he also think an asteroid hitting the Earth would be good for humans? pic.twitter.com/xaV8mM1kCk — Bernie Sanders (@SenSanders) February 9, 2018

Sanders has a long history of making questionable statements on Twitter.

In January he tweeted that “no one wants” a border wall with Mexico. (RELATED: Bernie Sanders Claims ‘No One Wants’ A Border Wall)

I’m not sure why President Trump wants to shut down the government over an $18 billion wall that no one wants, isn’t needed and Mexico won’t pay for. What the American people want, overwhelmingly, is to provide legal protection and a path toward citizenship for 800,000 Dreamers. — Bernie Sanders (@SenSanders) January 6, 2018

Follow Justin on Twitter