Some feuds make—and change!—history. The Hatfields and McCoys. Edison versus Tesla. Coke and Pepsi. Here are eight tales of petty jealousy and downright spite that were made for the history books. (And we’ve determined the winners!)

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If you're ever in Port Talbot, Wales, take a tour of the Baked Bean Museum of Excellence led by Captain Beany himself.
V is the only letter in the English language that makes itself heard no matter which words it appears in.
All the road lines dividing traffic used to be white, but yellow markers were added in 1971 for an important reason.
From William and Mary to William and Kate, find out which royals have lived, died, and possibly haunted Kensington Palace.
Mini shopping carts keep kids busy on shopping trips, but that’s not the only reason grocery stores have them.
Looking to the build the perfect cleaning playlist? These are the songs Spotify users are most likely to clean their homes to.
Those thin metal grooves may look dangerous, but they actually help prevent escalator accidents from happening.
The Library of Congress is home to the largest collection of Walt Whitman manuscripts on Earth, and it needs your help transcribing and reviewing them.
Since the 1970s, paper hearts have mysteriously appeared in Portland, Maine, on Valentine's Day—and the Valentine Phantom behind them refuses to make their identity known.
McDonald's has served billions of people over the decades. Every now and then, they get served themselves—with a lawsuit.
'The Dating Game,' a precursor to 'The Bachelor,' focused on love, not money, as the reward. Television hasn't been the same since.
Located past Pluto, the ultrared binary object Arrokoth is the farthest and oldest body ever studied up close. Data collected by NASA's New Horizons mission reveals insights about its formation and the origins of the solar system.
Much longer than four score and seven years ago, Abraham Lincoln delivered the most famous two-minute speech in history.
Take a break from your regularly scheduled stargazing to watch the moon swallow Mars on Tuesday morning.
The 1985 film 'The Goonies' has maintained a loyal audience for more than 30 years. It's finally back, but not as a sequel and not in the way you'd expect.
Coyote Peterson gives Mental Floss the scoop on his new Animal Planet series, 'Brave the Wild'—and reveals how snapping turtles figure into the story.
Happy leap year! You can thank Julius Caesar and his buddies for bringing them to Europe more than 2000 years ago.
From George Washington's hair to a winning lotto ticket, surprises abound between the pages of vintage books.
When contractors peeled back the panels of a condemned bar in Pennsylvania, they didn't expect to find a colonial-era log cabin. Now, the structure will be disassembled by hand so it can be moved someplace else.
Among the many types of synesthesia is grapheme-color, where people often perceive letters in color blocks.
Nelson Mandela, the anti-apartheid activist and former South African president, was released from a life sentence on this day in 1990.