Hyperthymesia is an extremely rare cognitive deviation in which a person remembers every detail of their life in the smallest details.

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Bats growl at each other like death metal singers 😠🦇🎶🥁

Bats have a tremendous vocal range of about 7 octaves, from 1 to 120 kilohertz! Most mammals have a range of 3 to 4 octaves, so this really is impressive. 

Higher frequency bat calls are used for echolocation, whereas lower frequency cries are how bats talk to each other. To make these lower pitched growling calls bats use structures in their throat, called ventricular folds, just like death metal and Tuvan throat singers do!

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The word "dude" was first used in the 1800s as an insult towards young men who were too concerned with keeping up with the latest fashions.

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Cacti as far as the eye can see 🌵

The saguaro cactus is an iconic symbol of the American desert. It's the tallest cactus in North America, found in the Sonoran desert. The arms can take decades to form, as they grow their first side arms at 75 to 100 years old. They can live up to 200 years!

Large saguaros can weigh between 3000 to 4000kg and the vast majority of that weight comes from water stored in the stem.

Saguaros are a vital part of desert life, providing food and shelter for native people as well as homes and food for wildlife. Birds, like the Gila woodpecker, make their nests in the cactus. In early summer, the blooms provide nectar for bats. Mammals, reptiles and insects all enjoy the fruit. They are truly the lifeblood of the desert 🏜️

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Frogs never drink.

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👌 Sign language is not universal.

Each country has its own sign language, although there are certainly similarities between them.

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If you are constantly desired to be ill, you have Nosophilia.

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The sunlight reaches the Earth in 8 minutes, Jupiter in 40 minutes, and to reach the boundaries of the Solar.

System, it takes 7 hours.

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The longest operation in the world lasted 103 hours and was performed by 20 doctors. It was the separation of conjoined twins in Singapore in 2001.

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Traveling is good for mental health, and it also reduces the risk of heart attack and depression.

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About 21% of android users use a smartphone with a broken screen.

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You lose heat 20 times faster when wet than dry. Remove wet clothes and dry them before wearing. Wool stays warm even when wet and is best for cold weather. Always carry wool clothing in cold places. 🧥❄️

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Kākāpō is a species of large, flightless, ground-dwelling parrots that look like owls. Also known as owl parrot, Kākāpō has a large grey beak, finely blotched yellow and green plumage, short legs, large feet, and short tail and wings. They are the heaviest parrots in the world and have a reported lifespan of up to 100 years.

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"Cheat Your Stomach"

In the forests of India grows a plant called kalir kanda, locally known as "cheat your stomach. After eating 1-2 leaves, one feels full for a whole week, even though there are no nutrients in the leaves.

Not bad for people who want to lose weight.

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The most expensive book ever sold is Leonardo da Vinci’s "Codex Leicester." It was bought by Bill Gates in 1994 for $30.8 million. The book is a collection of Leonardo’s scientific writings and drawings. 📚💰

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Caffeine doesn’t create energy, it just delays fatigue.

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Doing things that scare you will make you happier.

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Orgasms can lower a woman's risk of heart disease, stroke, breast cancer, and depression.

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Nowadays the average high school kid today has the same level of anxiety as the average psychiatric patient in the early 1950's.

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