Mr. Smarty Pants Knows

Vanna White, co-host of Wheel of Fortune, holds the Guinness World Record for the most frequent clapper, with an estimated 3.7 million claps over the show's 32 seasons. 

We've been putting shoes on horses for about 6,000 years.

On Jan. 31, 1962, three girls began laughing at a school in Kashasha, Tanganyika (now Tanzania). They couldn't stop laughing and eventually 60% of the school also began laughing. Many were unable to stop laughing for more than two weeks. Researchers have called this an epidemic of a mass psychogenic illness/mass hysteria driven by stress.

There are as many people in the world who are dyslexic as there are who are left-handed.

Scientists have trained ants to sniff for cancer in urine. Despite not having noses, ants have olfactory receptors in the antennae atop their heads to detect certain volatile organic compounds released by cancer. In payment, the ants were given a sugary reward near the urine samples.