The snow on Venus is metal
At the very top of Venus's mountains, beneath the thick clouds, is a layer of snow. But since it's so hot on Venus, snow as we know it can't exist. Instead, the snow capped mountains are capped with two types of metal: galena and bismuthinite.
Killer whales are whales.
These marine mammals are incredibly powerful ocean icons, but I've got news about orcas that may surprise some of you: the “killer whale” is NOT technically a whale! ... Orcas have a lot of characteristics in common with whales, but taxonomically, they're actually dolphins!
A day on Venus is longer than a year.
It takes Venus longer to rotate once on its axis than to complete one orbit of the Sun. That's 243 Earth days to rotate once - the longest rotation of any planet in the Solar System - and only 224.7 Earth days to complete one orbit of the Sun.
You only use 10 percent of your brain.
This is actually a myth. Modern PET and MRI scans of brain activity show that humans use way more than 10 percent of their gray matter on a regular basis -- though it might seem like some people use way less.
Arachnids have 6 legs
They have 8 legs. Insects have 6.
While sleeping, you cannot smell anything.
The research and experiments from Rachel Herz, a professor of psychiatry at Brown University and author of The Scent of Desire indicates that, people do not respond to odours while they are in the dreaming phase of sleep (REM) or deep sleep. "You cannot smell while you are asleep," she says.
Rubber bands last longer if you refrigerate them
When a rubber band is placed in the fridge, it causes the polymers to relax which keeps the band from breaking down as fast as it normally does.
The shortest war in history lasted for only 52 minutes.
The Anglo-Zanzibar War of 1896 is generally considered to be the shortest war in history, lasting between 38 and 45 minutes, marking it as the shortest recorded war in history.
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