Rock the boat using the physics of buoyancy The Greek polymath Archimedes is said to have solved the mystery of buoyancy in a bathtub. Even if the story is apocryphal, his principle isn't: If an object
Dirt-cheap bricks—just add pressure Bricks are fairly easy to make, but in the developing world, traditional fired bricks are sometimes weak and crumble-prone, while cement ones are often unaffordable.
Nuclear fusion is the process of squeezing two atoms together so tightly that their nuclei fuse, creating a heavier atom and releasing a blast of energy. Fusion creates the inferno inside the sun — and