Sen. Bernie Sanders (I-Vt.) doesn’t hesitate to get sassy with congressional committees when they spread erroneous news from questionable sources.

The House Science Committee tweeted a link to a Breitbart News article about plummeting global land temperatures on Thursday, alleging that the climate “alarmist community” is hypocritical for remaining silent about the statistics.

To which Sanders replied: 

The for-profit Trump University, established in 2005, recently agreed to pay $25 million to settle lawsuits alleging that the school had lured people with false advertising.

Trump himself has called climate change a “hoax,” and his incoming chief of staff, Reince Priebus, recently said the president-elect still considers it “a bunch of bunk.”

But just because it’s getting cold out doesn’t mean there isn’t an overall trend of global warming. Scientists pretty much universally concede that climate change is real.

Democrats on the committee echoed Sanders’ message, saying they rely on actual scientific data for climate information. According to the National Oceanic and Atmospheric Administration, global surface temperature are still up.

Sanders vocally advocates seeking solutions to climate change. During his presidential run, he campaigned to pivot away from fossil fuels and invest in clean energy.