From 1 to 7 p.m. on Saturday, dinosaur expert Matthew Carrano will explore “the history and special effects of dinosaurs in popular film” in the Baird auditorium.

The Smithsonian’s Natural History Museum dinosaur hall will close for five years for renovations to accommodate a newly acquired T. rex skeleton.

Today the Smithsonian announced that conservative billionaire David Koch had donated $35 million for a new Dinosaur Hall in the National Museum of Natural History.