The number of known serial killers in the United States has fallen sharply since the 1970s and 1980s. Nearly 770 serial killers operated in the U.S. throughout the 1980s, and just under 670 in the ’90s, based on data compiled . Researchers link the decline to advances in DNA testing, surveillance cameras, digital records, improved forensic science, and greater public awareness. The rough estimate on the global rate appeared to show a similar drop over the same period.
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The teeth are the only part of the skeleton that we clean.

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🌊 Starfish don't have blood.

They circulate nutrients by using seawater in their vascular system.

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This tree species, the walking palm tree, can walk up to 65 feet each year to find the best habitat to live in.

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Ablutophobia is a fear of bathing, cleaning or washing the body. It is a real anxiety disorder. People with it may feel panic or rapid heartbeat when thinking about bathing. The fear is stronger than normal dislike and can affect daily hygiene. Treatments like therapy can help manage it.
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When we are afraid, our vision and sense of smell become more acute.

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🤧Phantosmia is when you smell something that isn't there.

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🌨️ Jupiter experiences helium rain, where the helium in its atmosphere condenses into droplets as it descends towards the planet's core.

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On a clear, moonless night the human eye can detect a match being struck 50 miles away.

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Testicles make several million sperm per day — about 1,500 per second.

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🧠 The smartest person in the world Kim Un Yong could speak 5 languages by the age of 2, enrolled in university at 4, and received a job offer from NASA at 7 years old.

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🌊 Tallest tsunami In July 1958 the tallest tsunami ever recorded crashed through the quiet fjord of Lituya Bay in Alaska .

At 1,720 feet, the megatsunami was higher than the Empire State Building. 🤯

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Playing video games can help train your brain to make faster real-life decisions with equal accuracy.

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The game of darts was invented several centuries ago in Great Britain, and because of the rain, when a heavy downpour interrupted the competition of archers, and they, while waiting indoors, began to throw arrows at the target with their hands out of boredom.

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