The original reason electrical plugs had holes isn’t the reason they still have holes these days. Discover the history behind their evolution here.

INVENTIONS
We have two innovators to thank for our ability to scream-sing Celine Dion’s “It’s All Coming Back to Me Now” in front of a group of strangers.
Asked to evaluate his son's abilities as an intellectual, the elder Edison said that he was, “absolutely illiterate, scientifically and otherwise.”
Cream Guitars is launching a new type of instrument with e-ink technology.
CPR, Post-It notes, and ciabatta bread were all invented way later than you might assume.
Ben Franklin’s famous experiment with the kite and key gave him a better understanding of the nature of electricity. But did that event lead to the lightning rod?
Picasso and his Blue Period have nothing on Yves Klein, who created art almost exclusively in a shade of his own invention.
In the scope of human history, the wheel is actually a rather young creation. Beer, clothing, and jewelry are much older.
The snot-blocking glass has been keeping buffets (relatively) safe since the 1950s, and it's thanks to one germophobe.
Discover the intriguing origins of everything from Oreos to Juicy Fruit gum to sparkling water, exploring their hidden histories and unexpected beginnings, from vaudeville fads to accidental inventions.
Here's the story of why the spinning jenny was invented and how the spinning mule usurped it.
Henry Ford’s car made of soybeans and Thomas Edison’s ghost-detecting telephone are just two little-known creations of history’s most famous inventors.
The syringes used by medical professionals today can be traced back to her 1899 patent.
Get to know the brilliant African American innovators who brought you blood banks, personal computers, dry cleaning, and more.
Discover the fascinating history of pizza, from ancient flatbreads to modern variations.
Not every great invention was created according to plan. From penicillin to breakfast cereal to popsicles, these everyday items were all invented entirely by accident.