
1954
The four-minute mile. On a cold, windy day in Oxford, medical student Roger Bannister ran a mile in 3 minutes 59.4 seconds, a barrier many had thought impossible.
Wikipedia: Roger BannisterPhoto: User:Pruneau / Wikimedia Commons (CC BY-SA 3.0)
5 moments from 1840 to 1998: discovery, creativity and courage, each with a source to read more.
5 moments

1954
Photo: User:Pruneau / Wikimedia Commons (CC BY-SA 3.0)

1840
The world's first adhesive postage stamp, showing young Queen Victoria, could be used for the first time in Britain.
Photo: General Post Office of the United Kingdom of Great Britain and Ireland / Wikimedia Commons (Public domain)

1940
John Steinbeck won the Pulitzer Prize for his novel about a poor farming family heading west in hard times.
Wikipedia: The Grapes of WrathWikipedia: John Steinbeck
Photo: McFadden Publications, Inc.; no photographer credited; photo likely the work of Sonya N… / Wikimedia Commons (Public domain)

1949
The EDSAC computer at Cambridge University worked out a table of square numbers, one of the first computers to store its own program in memory.
Photo: Unknown author / Wikimedia Commons (CC BY 2.0)

1998
Steve Jobs unveiled the iMac, an all-in-one computer in a see-through blue case that helped turn Apple's fortunes around.
Photo: Alterations by David Fuchs ; original by Rama , licensed CC-by-SA / Wikimedia Commons (CC BY-SA 4.0)
Moments chosen for discovery, creativity and courage. Each one links to a source where you can read more; photos are credited to their owners.