Curious minds may not have pondered all of these little mysteries, but they’ll certainly be dying to learn about them now.
Looking for some mind-blowing interesting facts that will make you question everything you know about the world we live in? Well, look no further. There’s nothing quite like a weird facts to add a sense of wonder to the everyday. Plus, this random trivia will totally impress your friends and may even come in handy one day when you’re least expecting it. Get ready to do some serious pondering.
Why do we hiccup?
Believe it or not, hiccups might be an evolutionary holdover from our more fishlike ancestors, according to Smithsonian Magazine. During a hiccup, the muscles we use to inhale contract while our vocal cords are slammed shut by the tongue and the roof of the mouth. There’s no discernible purpose for hiccups in humans, but a similar pattern of movement among amphibians is useful. When tadpoles are breathing underwater during a stage when they have both lungs and gills, they take in a mouthful of water, close the opening to the lungs, and then force the water out through their gills. In both humans and amphibians, the signal initiating hiccup-like activity comes from the brain stem.
Why do seashells sound like the ocean?
It’s lovely to reminisce about your beach vacation by listening to the sound of waves in a big conch shell. Of course, that it isn’t the ocean you hear. The shape of seashells allows them to capture and reflect ambient noise, amplifying certain frequencies, so when you hold one to your ear, you’re really just hearing echoes of the quiet sounds that are already surrounding you. Nationally accredited audiologist Shruti Deshpande, PhD, an assistant professor at St. John’s University and the Long Island Doctor of Audiology Consortium, told HuffPost that empty bowls and bottles can produce similar effects. Take a look at ocean mystries that scientists still can’t explain.
Why do humans have an appendix?
We rarely think about the appendix, a small structure near the beginning of the large intestine, until it gets infected and requires emergency surgery. Since Charles Darwin’s era, many have thought the appendix a vestigial digestive organ left over from some previous evolutionary phase of our development and no longer in use. But in recent years, scientists have realized that many other mammals (including koalas and beavers) have appendixes. The tiny organ might be part of the immune system, assisting the body’s defenses by storing healthy gut bacteria.
Why are school buses yellow?
The color is officially called “national school bus glossy yellow,” and it’s standard across the United States. Back in 1939, at a conference funded by the Rockefeller Foundation, transportation officials from all of the then 48 states agreed on a number of safety standards for school buses. Yellow is very visible, even in early morning or late-evening light, and black lettering on a yellow background is easy to read. It took until 1974 for all the school buses in the country to meet the standards.
Why do we always see the same face of the moon?
Here on Earth, we can always see the “man in the moon” because the same surface faces toward us no matter where the moon is in its orbit. That’s because the moon is tidally locked with Earth, meaning that our gravitational pull keeps it rotating on its axis at a speed that’s coordinated with its orbit around our planet. We humans didn’t get a look at the moon’s other side until 1959, when the Soviet Luna spacecraft took the first photos and scientists realized it’s much different: There are few large lava seas, like the ones on the side facing us, and many more impact craters.
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Why do we sleep?
Although the actual mechanism of sleep is still poorly understood, we do know why we need to do it. Brains seem to require downtime in order to stay organized and particularly to strengthen new neural connections that allow us to remember what we’ve learned. And we know why we shouldn’t go without: Long-term sleep deprivation can cause hallucinations, psychosis, heart disease, and immune system dysfunction. “Every physiological system in the body, and every operation of the mind, is powerfully enhanced by sleep
Why do squirrels chase one another?
When they go on mad sprints up and down trees and across your yard and deck, they’re probably working out their hierarchy, according to Live Science. Squirrel expert Michael Steele of Wilkes University in Pennsylvania tells the website that the most common U.S. species—the Eastern gray squirrel—doesn’t tend to be territorial but does like to let everyone know who’s boss. Not too surprisingly, young squirrels also like to chase one another around for fun, just as puppies do.
Why are some people left-handed?
About 90 percent of humans are righties, and it’s not at all clear why that proportion continues to hold. If there were a major evolutionary advantage to being left-handed, more people would have the trait; if there were a clear disadvantage, it would disappear. The latest thinking among scientists is that a large number of different genes affect handedness, according to Smithsonian Magazine. Many of the genes that have been studied play a part in the body’s left-right symmetry, and certain mutations can lead to unusual organ placements (like the heart being on the right side instead of the left).
Are left-handed people also left-footed?
Footedness and handedness are more often in sync for right-handed people than for southpaws, according to Discover. Overall, most of us are likelier to favor our right hands, feet, and eyes. Fun fact: People who are left-footed are called “goofy” in board sports such as surfing, skateboarding, and snowboarding—they actually place their right foot on the front of the board.
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How do birds know where to migrate?
Forty percent of bird species migrate every year, with some traveling tens of thousands of miles. (Arctic terns fly about 50,000 miles every year, from pole to pole.) Migrating birds can even find their destinations if researchers make them start from unusual locations, according to an article in the Conversation by Richard Holland, senior lecturer in animal cognition at Bangor University. How do they do it? Holland and his team published a study suggesting that some songbirds use a magnetic map to navigate long distances, but nobody knows how they can detect the Earth’s magnetic field. Read about these science mystries no one has figured out
