On January 15, 1908, Hungarian born US theoretical physicist Edward Teller, often referred to as 'Father of the hydrogenic bomb', was born. Teller made numerous contributions to nuclear and molecular physics, and is considered one of the inspirations for the character Dr. Strangelove in the 1964 Stanley Kubrick movie of the same name
On October 30, 1961, the Soviet Union detonated the hydrogen bomb Tsar Bomba over Novaya Zemlya, which still is the largest explosive device ever detonated, nuclear or otherwise.