American Museum of Natural History

"Check out the Newmont Azurite, discovered in 1952 and used by a miner to pay his bar tab! It is considered one of world’s finest mineral specimens."

"It might be cold outside, but the weather is tropical inside The Butterfly Conservatory! Mingle with up to 500 fluttering, iridescent butterflies among tropical flowers and 80-degree temperatures."

"Tweet your questions and comments throughout the program with #AMNHscicafe"

"Pick up a free Explorer device at the Museum's main entrance or download the Explorer app to your iPhone or iPod touch! Explorer works like a personal GPS throughout the Museum."

"Must-see: Check out what real dinosaur skin looks like! Find the fossil skin impressions in the Hall of Ornithischian Dinosaurs on the 4th floor."

"Did you know the blue whale has a belly button? Try to spot it in the Milstein Hall of Ocean Life."