Forget ropes and ramps—what if the secret to the pyramids was sound? We explore the ancient mystery of acoustic levitation and how it may have allowed civilizations to lift and transport stone with ...

Several of Mount Rainier’s glaciers are already gone, experts say, and others aren’t far behind. The News Tribune asked what ...

Ancient Lost Worlds and Hidden History. On location videos made by author and adventurer Brien Foerster exploring Peru, ...

The number you calculated is a reasonable approximation of the person’s skin surface area. To get an idea of the force of air pressure on the skin, multiply the surface area you calculated by the ...