Isaac Newton did not just invent calculus and rewrite physics, he also tried to calculate the end of the world with the same cool confidence he brought to falling apples and planetary orbits. In ...

Cosmic rays, born from distant exploding stars, produce muons that shower Earth and penetrate stone like ghosts. These ...

Egypt, third millennium b.c. The Great Pyramid of Giza is both the oldest of the Seven Wonders and the only one still standing. Built by the pharaoh Khufu (reigned ca. 2551–2528 b.c.) to serve as his ...