Some people swear by things they picked up at school or university, others rely on the opinions of experts, while there are also some who get their intake of facts from the World Wide Web. And while some of the sources might seem more reliable than others, it's not uncommon that all of them might be incorrect sometimes.
There are plenty of scientific theories that have been proven wrong, so things that you've heard from 3 friends and aunt and your grandma can definitely be wrong. Here's a list of half-truths and all-lies that many people believe but actually have either been disputed or don't have any actual substance to them, according to Wikipedia. Scroll down, read through, and see if your own perception of truth and reality is challenged. Oh, and don't forget to comment and vote on your favorites!
#21 Christopher Columbus Was Not The First European To Visit The Americas

Leif Erikson, and possibly other Vikings before him, explored Vinland, which was either the island of Newfoundland, part of modern Canada, or a term for Newfoundland and parts of the North American mainland. Ruins at L'Anse aux Meadows prove that at least one Norse settlement was built in Newfoundland, confirming a narrative in the Saga of Erik the Red. Columbus also never reached any land that now forms part of the mainland United States of America; most of the landings Columbus made on his four voyages, including the initial October 12, 1492 landing (the anniversary of which forms the basis of Columbus Day), were on Caribbean islands that are now independent countries.
129points
#22 The Great Wall Of China Is Not Visible From Space Or From The Moon

The Great Wall of China is not, as is claimed, the only human-made object visible from space or from the Moon. None of the Apollo astronauts reported seeing any specific human-made object from the Moon, and even Earth-orbiting astronauts can see it only with magnification. City lights, however, are easily visible on the night side of Earth from orbit.
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129points
#23 Humans Did Not Evolve From Either Of The Living Species Of Chimpanzees

Humans and chimpanzees did, however, evolve from a common ancestor. The most recent common ancestor of humans and the other living chimpanzees lived between 5 and 8 million years ago.
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129points
#24 The Historical Buddha Was Not Obese

The "chubby Buddha" or "laughing Buddha" is a 10th-century Chinese folk hero by the name of Budai. In Chinese Buddhist culture, Budai came to be revered as an incarnation of Maitreya, the Bodhisattva who will become a Buddha to restore Buddhism after the teachings of the historical Buddha, Siddhārtha Gautama, have been forgotten.
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122points
#25 Sugar Does Not Cause Hyperactivity In Children

Double-blind trials have shown no difference in behavior between children given sugar-full or sugar-free diets, even in studies specifically looking at children with Attention deficit hyperactivity disorder or those considered sensitive to sugar.
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119points
#26 The Redhead Gene Is Not Becoming Extinct Due To The Gene For Red Hair Being Recessive, Nor Will The Gene For Blond Hair Disappear

Although redheads and blonds may become more rare, they will not die out unless everyone who carries those genes (strictly speaking, alleles) dies or fails to reproduce.
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118points
#27 There Was No Widespread Outbreak Of Panic Across The United States In Response To Orson Welles's 1938 Radio Adaptation Of H.g. Wells's The War Of The Worlds

Only a very small share of the radio audience was even listening to it, and isolated reports of scattered incidents and increased call volume to emergency services were played up the next day by newspapers, eager to discredit radio as a competitor for advertising. Both Wells and CBS, which had initially reacted apologetically, later came to realize that the myth benefited them and actively embraced it in later years.
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116points
#28 Hair And Fingernails Do Not Continue To Grow After A Person Dies

Rather, the skin dries and shrinks away from the bases of hairs and nails, giving the appearance of growth.
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110points
#29 George Washington Did Not Have Wooden Teeth

His dentures were made of gold, hippopotamus ivory, lead, animal teeth (including horse and donkey teeth), and probably human teeth purchased from slaves.
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107points
#30 Vomiting Was Not A Regular Part Of Roman Dining Customs

In ancient Rome, the architectural feature called a vomitorium was the entranceway through which crowds entered and exited a stadium, not a special room used for purging food during meals.
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104points

