The most famous packing problem concerns spheres. In 1611, the astronomer Johannes Kepler proposed that the densest way to ...

Why did they form at that time? Astronomers know from observing distant exploding stars that the size of the universe has ...

Meanwhile, AI is reshaping the workplace along with the rest of the world, and you need to be prepared. In an IBM survey of 2 ...

When an atom breaks apart, it gives out energy and more neutrons, which can then split other atoms. Get enough atoms splitting and you have the chain reaction needed for a bomb blast ...

As of June 22, 2025, the conflict between Iran and Israel has intensified dramatically. Israel, under Operation Rising Lion, launched a wave of airstrikes beginning June 13, targeting Iran's nuclear ...