> The team of scientists examined 150 limestone spheroids dating from 1.4m years ago that were found at the ’Ubeidiya archaeological site in the north of modern

> The team of scientists examined 150 limestone spheroids dating from 1.4m years ago that were found at the ’Ubeidiya archaeological site in the north of modern-day Israel. I mean David/Goliath wasn't totally made up for fun, slings were a key weapon in early warfare. They work.