04/10/2013 01:49 pm ET Updated Apr 10, 2013

Stephen Colbert Visits Bill Clinton, Chelsea Clinton At CGI U, Builds Model Volcano (VIDEO)

Not to be outdone by the brilliant young minds at the Clinton Global Initiative’s exchange fair, Stephen Colbert came armed with his own problem-solving project –- a model volcano.

On the final day of CGI U, an event organized by Bill Clinton’s humanitarian organization, Colbert joined the meeting to check out how innovative students are tackling some of the world’s most pressing issues. The initiatives focused on issues related to education, the environment, human rights, poverty and public health.

“This is like a science fair, but for noble causes,” Colbert told Bill and Chelsea Clinton.

This was the second time this week that Bill Clinton and Colbert met to discuss the former president's charity initiatives.

While at CGI U, Colbert chatted with a group that's aiming to generate electricity from methane gas that’s produced from human waste, something the entertainer calls "poop power." Another set of participants is working to extract water from atmospheric air.

After perusing the projects, Colbert unveiled his own work of genius: a model volcano. He also offered up one piece of criticism.

“I was so inspired by the commitment of these young people,” the late-night talk show host said at the event. “If I have only one criticism of their projects, it’s just that each one only addresses one problem at a time.”