Why is the Universal Sign for a Hitchhiker the Thumbs Up, Held Out? And is It Actually Dangerous?
Similar Tracks
PLUTO: A Feat of Logistical Engineering Unmatched in the History of Amphibious Warfare
Today I Found Out
Secrets of the Dinosaurs: The Real Jurassic Americas (Full Episode) | Drain the Oceans
National Geographic
What was It Actually Like to be a Gladiator, History's Literal Deadliest Fart Killing 1000s, & More
Today I Found Out
Khalid ibn al-Walid (ra): Becoming the Sword of Allah | The Firsts | Dr. Omar Suleiman
Yaqeen Institute