Modern Awesome Labs’ unique playing cards are printed with a special ink that reacts to body heat. Simply swipe your fingertips over the surface of the cards, and the images on their fronts transform to new shades. After you put them down, they reset to their original color after about 30 seconds.
Designed for camping in extreme weather conditions including cold, high winds, and rain, this heated mat connects to a portable external furnace, which can run for up to 24 hours using butane or propane gas. Weighing 6.4 lb total, it’s designed to pack up small for easy carrying.
General Electric engineers dropped a snowball into a vat of molten metal slag, yet it did not melt, thanks to the amazingly well insulated superalloy container they placed it inside of. These materials are designed to withstand the extreme heat produced by a jet engine.