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Weird Facts

Glass is not a slow-flowing liquid

Science

Old window panes are thicker at the bottom because they were made that way, not because glass flowed. Glass is an amorphous solid; at room temperature it does not creep.

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Pumice can float on water

Science

Gas bubbles trapped during eruption make pumice light enough to float until it becomes waterlogged.

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Pink lakes get color from salt-loving microbes

Science

Some salty lakes turn pink when algae or bacteria produce colorful pigments.

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Strangler figs grow around host trees

Science

Strangler figs start high in another tree, send roots downward, and can eventually surround the host.

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Blood Falls pours red water in Antarctica

Science

Iron-rich salty water oxidizes when it reaches the air, staining the ice red.

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A 1,000-year-old onion-and-garlic eye remedy worked against MRSA in lab tests

History

A medieval Anglo-Saxon eye salve recipe killed antibiotic-resistant bacteria in a 2015 laboratory test.

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Bromine is a liquid element at room temperature

Science

Bromine is one of the few elements that is liquid under ordinary room conditions.

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Rafflesia flowers smell like carrion

Science

Rafflesia produces enormous flowers that smell like rotting meat to attract flies.

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The Mpemba effect has hot water sometimes freezing faster

Phenomena

Under certain conditions, warmer water can freeze faster than cooler water, named after a Tanzanian student who noticed it.

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Bananas are slightly radioactive

Science

Bananas are rich in potassium, and a small fraction of natural potassium is the radioactive isotope K-40. The dose from one banana is utterly negligible (~0.1 microsieverts).

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Catatumbo lightning returns night after night

Science

A region near Lake Maracaibo in Venezuela is famous for frequent nighttime lightning storms.

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Frost flowers bloom from young sea ice

Science

Thin ice crystals can grow into delicate flower-like structures when cold air meets moist surfaces.

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The fastest land animal can't sustain its top speed long

Science

Cheetahs sprint at incredible speeds but can only maintain those bursts for seconds before risking overheating.

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Death Valley stones move on thin ice

Science

Sailing stones slide when wind pushes them across slick sheets of thin ice and wet mud.

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Brinicles are underwater icicles

Science

Cold salty brine can sink beneath sea ice and freeze seawater into a hollow icy tube.

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Slime molds can solve mazes

Science

Slime molds have found efficient paths through mazes despite having no brain.

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Some orchids imitate female insects

Science

Certain orchids attract male insects by mimicking the look or scent of potential mates.

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Baobab trees store water in swollen trunks

Science

Baobabs survive dry seasons partly by holding water in massive, spongy trunks.

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Bristlecone pines can outlive civilizations

Science

Some bristlecone pines have survived for thousands of years in harsh mountain conditions.

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Rain smell has a name

Science

Petrichor is the earthy smell after rain, helped by plant oils and geosmin from soil microbes.

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Supercooled water can freeze on command

Science

Very pure water can stay liquid below freezing, then crystallize suddenly when disturbed.

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Mammatus clouds hang like pouches

Science

Mammatus clouds form pouch-like lobes beneath storm clouds and look almost sculpted.

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Peat bogs can preserve ancient bodies

Science

Acidic, oxygen-poor bogs can preserve skin, hair, clothing, and tools for centuries.

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Aerogel is mostly empty space

Science

Silica aerogel is an extremely light solid with tiny pores that make it a powerful insulator.

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