Eyeball

or forty years, the Cold War was also waged beneath the sea between the United States and the USSR. Submarines faced submarines in close-quarter encounters which could have triggered major conflicts on many occasions. It's October 1962, and the Cuban missile crisis is in full swing. U.S. President John F. Kennedy and Soviet Union Premier Nikita Khrushchev are in a standoff over Soviet nuclear missiles being installed in Cuba. The world is holding its breath, hoping that the Soviets aren't going to fire the missiles at the United States, and the Soviets are crossing their fingers for the U.S. not to launch its Turkey-based arsenal at the USSR.

Among America's battle-scarred tank units, the 3rd Armored Division is remembered as first among equals. The 3rd earned its reputation as the 'Spearhead Division' in WWII, when it led Allied Forces into the heart of Germany. During the tension-filled decades of the Cold War, the 3rd Armored stood eyeball to eyeball with the Soviet Union. In the Gulf War, this specialized tank unit overpowered Iraqi armor. From Elvis Presley to Colin Powell, the 3rd has always been on the front lines of history.

Hannah Fry shows that when it comes to the universe, size really does matter. Hannah takes the audience into a thought experiment where the size of everything can be changed to reveal why things are the size they are.