The Hairy Ball theorem, proved by Henri Poincaré in 1885, demonstrates that it's impossible to create a perfectly smooth hair pattern on a spherical surface. The theorem states that any continuous ...

Bayes' theorem is a statistical formula used to calculate conditional probability. Learn how it works, how to calculate it ...

A study exploring the mechanisms behind why cognitive performance improves in response to exercise, has found that dopamine plays a key role. A study exploring the mechanisms behind why cognitive ...

Food cravings are common and can be triggered by physical causes like hormone shifts, low quality sleep, dehydration, or a diet that is low in nutrients. Mental factors like stress, mood, personality ...

Mystery solved! Here's what TL;DR means and why you keep seeing it online. It can be hard to stay current with the latest slang. Language (and internet culture) continues to evolve, resulting in an ...