Tipster Michael Wymbs alerted us to last night’s episode of the Colbert Report, on which Physicas Professor Brian Greene was a guest. Greene was promoting the World Science Festival (of which he is host), which will take place this weekend in all over the city. As part of the festival, Greene will be a panelist in an “Invisible Reality” lecture (moderated by favored West Wing Republican Alan Alda.) Check out the Festival’s full schedule here.

The Festival’s Street Fair will take place on Saturday in Washington Sq. Park and will feature a 12-foot tall animatronic dinosaur and a real-life version of the Magic School Bus. Bwog will see you there.