In 2002, a student at his very first excavation found a fossilised human jawbone in a cave on Mount Carmel in Israel, but the find was kept quiet for 16 years while his supervisors sought to prove an earth-shattering theory. In 2018, they finally went public with their conclusions – the jawbone, itself up to 194,000 years old, was found alongside flint flakes that were as old as 250,000 years, meaning that Homo sapiens actually left Africa 50,000 years earlier than previously thought. A jaw-dropping discovery.