The Most Free-Spirited Hippies in Hollywood History

John Mayer

John Mayer seems to be revisiting his hippie roots. With a new gig as an honorary Dead & Company member, he's gained a new appreciation for the era of flower power. Let's not forget when he tried his hand at becoming a country singer, though.

The More You Know

Apollo 17 astronaut Harrison Schmitt was allergic to moon dust.
Up to 4% of the sand on Normandy beach is made up of shrapnel from D-Day that has broken down.
The unicorn is the national animal of Scotland.
A full jumbo jet tank has enough fuel to drive a car around the world four times.

Post originally appeared on Upbeat News.