How Not To Worry: A 1934 Guide to Mastering Life | Brain Pickings
Aerogel, also know as frozen smoke, is the world’s lowest density solid, clocking in at 96% air. If you hold a small piece in your hand, it’s practically impossible to either see or feel, but if you poke it, it’s like styrofoam. It supports up to 4,000 times its own weight and can withstand a direct blast from two pounds of dynamite. It’s also the best insulator in existence!
Gypsies have long been among the most mysterious, exotic peoples on earth. They have been described as a race of nomads, who have no real home. Gypsies do have their own language, Romani, and they identify themselves as Romani people. Gypsies came to Europe long ago from India. Gypsy history remained unknown for centuries, largely because they had no written language, and strangely enough, they had forgotten where they came from.Gypsies generally claimed to be Egyptians—hence the name "Gypsy.
Foods that take more calories to eat/digest than are in them.