We’ve all heard the five-second rule: as long as the food has been on the ground for less than five seconds, you’re safe to eat it. But are you? Birth of an urban myth When it comes to the origin of the five-second rule, stories abound. Genghis Khan often stars in these accounts, with claims it was originally known as the Khan rule. This rule apparently came into play at 13th-century victory banquets when Khan […]
Are you an optimist? Quite likely – more than three-quarters of us are. And it’s a good thing to be: optimists are healthier and live longer. But there’s also a dark side to optimism.