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TIL that spiders tune each strand of their web to a specific frequency by making some strans tighter than others so that when something is caught in it, the spider can easily pinpoint where it is. This is also used for determining whether what cause the sound is a food or a potential mate.

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4D5g TIL the term “slush fund” comes from the age of sailing when salted meat was kept in barrels. After the barrel was finished, there was a slushy mix of fat and salt left over which was saved and then sold at port, the funds were then used to purchase a luxury for the crew.
P1JOn TIL Hulk Hogan Helped Prevent Jesse Ventura From Starting A Wrestlers Union
WZ69 TIL Bill Murray only agreed to Garfield because he thought the script was by Joel Coen of the Coen Brothers, while it actually was by Joel Cohen, the critically panned writer.
mxoeP TIL that there are about fifty abandoned cities in China. Based on electricity usage, it's estimated that there are over 60,000,000 completely unused apartments.
BrbRy TIL: Vanilla comes from a flowering plant in the orchid family. It grows as a vine and flowers only bloom for one day. There is only a 1% chance of wild pollination so each flower must be hand pollinated. The fruits are 15–23 cm (6–9 in) long pods and are used to produce vanilla extract.