People are more likely to comply with requests from authority figures.

The modern triathlon — swim, bike, run — was invented in California in 1974 as a way to settle debates about which sport produced the fittest athletes.

There are invisible particles everywhere.

The word 'clue' originally referred to a ball of thread — in Greek mythology, Ariadne gave Theseus a thread to escape the labyrinth.

The QWERTY keyboard layout was designed partly to slow typists down and prevent typewriter jams.

Economist Arthur Laffer famously sketched the Laffer Curve on a napkin during a dinner meeting in the 1970s.

Traditional batik fabric dyeing in Indonesia is protected as an Intangible Cultural Heritage by UNESCO.

Gymnastics has been part of the modern Olympics since 1896.

The Dutch Golden Age saw major trade and artistic achievements.