It's been a hectic first week of classes here at Cornell, and Heroes and Villains is here to catch you up on all the news you may have missed.

On Saturday, Bill Nye ’77 gave a lecture and dedicated a new solar clock, embedded in the facade of Frank T. Rhodes Hall. The Sun had the opportunity to speak with Nye about his experiences at Cornell and beyond.

Click to see The Sun's guide to Thursday's life and news.

Yesterday evening, dressed in a blue jacket and his signature bow tie, Bill Nye ’77 returned to Cornell to speak at the Alice Cooke House.

For almost a week, Prof. Bruce Lewenstein, communication, tantalized his class, Communication 2850: Communication in the Life Sciences, with only the vaguest of details about a “super secret mystery guest.” Lewenstein would only say that the “mystery guest” was tall, thin and a Cornell alumnus.

“While I heard the gossip about his potential appearance, when he actually walked into the room I was so surprised,” Josh Helfgott ’11 stated in an e-mail. “He walked in wearing his trademark bow tie and smiled at the class. All I could do was smile. He looked just like he does on TV.” The Science Guy: Bill Nye ’77 speaks to Communication 2850: Communication in the Life Sciences yesterday in Warren Hall.