UCMP Assistant Director Mark Goodwin's research on Triceratops is featured on National Geographic Channel's video of the week. Triceratops are named for the three horns that protrude from the skull — and as Mark and his colleague Jack Horner have discovered, those three horns tell a fascinating story about the growth and development, and potentially the behavior, of these dinosaurs. The National Geographic video is an excerpt from an hour-long television program, Dinosaurs Decoded. Be sure to catch it on the National Geographic Channel on Sunday, October 11 at 9pm, and on Tuesday, October 13 at 9pm. And check out a preview of the video, along with photos and fun facts, here.