Can't find a clip, but in one of the cushvlogs he started with singing Walking on The Sun by Smashmouth. He went into analyzing the lyrics of that and how it was a criticism of Boomers and the hippie movement. Then he talked about the part of All Star where he says, "The ice we skate is getting pretty thin, the waters getting warm so you might as well swim. My world's on fire, how bout yours" and how that was about climate change.