If you thought millennials couldn’t love New York Rep. Alexandria Ocasio-Cortez more, just wait until you see this video of her chatting with none other than beloved climate activist and television host, William Sanford Nye. AKA: Bill Nye the Science Guy.

This surprise conversation went down during a panel at South by Southwest (SXSW) on Saturday. Held in Austin, Texas, SXSW is a massive conference and festival hybrid, where people from the tech, music, film, arts, and other industries come together once a year, typically in mid-March, to talk big ideas.

For Ocasio-Cortez, who participated in a panel called, “Alexandria Ocasio-Cortez and the New Left,” people came out in droves. Her panel, moderated by Briahna Gray, Senior Politics Editor at The Intercept, was standing-room only.

At the end of the panel, during the Q&A portion, Nye approached the mic with his question like every other attendee.

Here’s what he said: