Scuba diving cylinders are full of air, not pure oxygen. Oxygen is toxic to humans from about 20 ft deep.
_scottwar / Via reddit.com

One earthworm doesn’t turn into 2 if cut in half. Only the half where the mouth is located can survive, the other dies.
Redshift2k5 / Via reddit.com

That milk is the best snack for cats. In fact, cats are lactose intolerant and it’s extremely dangerous for them to drink milk as it can cause them to have diarrhea.
Minhaj Hassan / Via quora.com

That spaghetti originated in Italy. It’s China that is the actual motherland of spaghetti.
Minhaj Hassan / Via quora.com

That the blood inside your body is blue until it’s exposed to oxygen. In fact, it’s always red, just different shades. Your veins look blue under your skin because of the way your skin absorbs light and reflects it back to your eyes.
Hilarious_83 / Via reddit.com

The eggs we buy in stores are empty. No baby chickens would ever hatch from them.
radical_ulk_ / Via twitter.com

The sum of the angles of a triangle is not always 180 degrees. All the stuff you learned in high school geometry is only true in perfectly flat, Euclidean geometry. In spherical geometry, for example, the sum of a triangle’s angles is going to be greater than 180 degrees.

That bread or cake won’t rise in the oven and will fall if you make loud noises while it’s baking. That’s a myth. You can listen to your music at full volume and it won’t affect the chemical processes taking place during the baking process.
agentprimus / Via reddit.com

Ancient statues in Rome and Greece were actually ridiculously colorful, but we are used to seeing them marble-white because the paint just wore off over time.
Matt Miller / Via quora.com

It is believed that hydrogen peroxide is a good antiseptic. In reality, not only is it useless, but it is actually detrimental to healing.
Matt Miller / Via quora.com

That bananas grow on trees. Technically, the banana tree is a high herb.
Vandit Khandewal / Via quora.com

That the wedding ring is worn on the left fourth finger because it is the only finger with a vein that connects to the heart. In reality, all fingers have veins and all veins connect to the heart.
carolinablue199 / Via reddit.com

That if you leave your phone on the charger for a while after it hits 100%, then the battery capacity will reduce. In fact, that’s a myth. Modern smartphones manage the power very rationally. The fact that you leave the device connected to the power supply for a long time doesn’t affect the battery life.
Aabishkar Wagle / Via quora.com

That pigs like mud. In fact, they are one of the cleanliest animals in the world. The reason they are often covered in mud is that they don’t have sweat glands and the mud helps keep them cool.
Minhaj Hassan / Via quora.com

Ravens and crows are different birds, though they look pretty similar. Ravens are larger, they have longer and more pointed tails and wings, and stronger legs. Crows are smaller in size and they have a shorter fan or square-shaped tail.
astute_newt / Via reddit.com

Lewis Carroll never named his character the “Mad Hatter.” In the original novel, he was simply called “The Hatter.”
Donjanelle Robinson / Via quora.com

Caesar Salad was not named for Julius Caesar, but rather for its inventor, an Italian restaurateur named Cesare Cardini who created the salad in his restaurant in Tijuana, Mexico in 1924.
juniorlax16 / Via reddit.com

Peanuts are not nuts. In fact, they are more like beans and are classified as legumes. By the way, pistachios, cashews, and almonds are also mistakenly called nuts. Technically they are seeds.
TheEmperorChing23 / Via reddit.com

And lastly:
That honey has an expiration date. In reality, it can be kept for hundreds of years.
Minhaj Hassan / Via quora.com

Via BrightSide, Preview photo credit: garden.eco, Vandit Khandewal / quora.com