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

Atoms slip against one another, eventually sticking in various combinations. Tectonic plates do the same, sliding across each ...

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

David Foster, Entain, discusses the unintentional fallout of financial risk checks and what can be done to avoid ...