Video: Watch Elizabeth II as Queen of the Nuclear Age

Millions – maybe billions of people took a moment to mark the passing of Queen Elizabeth II this week. Her reign of over 70 years and 214 days is the longest of any British monarch and the second-longest verified reign of any sovereign in history.

The era of Queen Elizabeth II includes, oddly, the advent of the Nuclear Age, as this brief, but fascinating video by the Bulletin of the Atomic Scientists chronicles (from the people that keep the famous Doomsday Clock).

(Cover: A young Queen Elizabeth II when she lived in Malta between 1947 and 1951. Via Shutterstock)