Explanation of the Dropship scam. Learn how scammers trick you into giving them money, even on this very subreddit.
Deer, and some other tiger prey animals, are dichromats, and perceive colour somewhat like a person with red-green colour blindness. A tiger has better camouflage than you might think
Water is diamagnetic; that means that objects full of water, even living things like frogs can be levitated above a powerful enough magnet
Beewolves are solitary wasps that dig holes in order to store bees that they have paralyzed. The female beewolf will lay a single egg on each bee, which will eventually be eaten alive by her larvae.
Pipe lining is the process of lining old dirty pipes with a liner that is soaked in a combination of resin and epoxy. Making the old pipes complete new without ripping them out.
An Archimedes’ screw is a machine used for transferring water from a low-lying body of water into irrigation ditches, Archimedes first described it around 234 BC.
Sagittarius A*, Milky Way’s black hole from Quasars: the Brightest Black Holes – Professor Carolin Crawford
The vibration in a PS5 controller is made by the rumble motors at the bottom of the handles (green object) spinning rapidly. Captured with CT scan.
Ratcheting mechanism inside bicycle rear hub allows coasting and locks when pedals are turned forward
The triboelectric effect is a type of contact electrification in which certain materials become electrically charged after coming into contact with another different material, and are then separated.
In order to evade predation, the female blanket octopus will unfurl her veil-like webbing to mimic the appearance and behavior of noxious sea creatures such as the venomous Portuguese man-o-war. Once the perceived threat (a diver in this case) is deemed innocuous, she relaxes her defensive posture.
3D animation that demonstrates the radius of destruction of the fallen line and gives advice on how to behave if you find yourself in this situation.