'Dinosaurs!' exhibit opening in Rockville Centre

The "Dinosaurs!" exhibit at the Center for Science Teaching & Learning includes more than a dozen full dinosaurs,  two of which — a giant ankylosaur and an enormous Stegosaurus — cost more than $20,000 each and are animatronic creatures that roar, breathe, swing their imposing tails and bob their heads. Credit: Danielle Silverman