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TIL that not all spiders that spin webs make them sticky. One of many strategies includes spinning a fine silky lattice that entangles their prey instead.

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eo9g TIL the military has used Silly String to detect trip wires in Iraq. The strands of string go 10-12 feet and are light enough to not set off the tripwire.
oRZV7 TIL that some fish are obligate air breathers. Meaning they need access to air for a breath. Examples of some fish are betas, tarpons, and arapaimas.
kJn6B TIL that prolific author Anne Perry was born Juliet Hulme, who with her best friend Pauline Parker murdered Parker’s mother in 1954
vAp7 TIL an activist group in Zurich dyed fountains red to protest tampons being taxed at a rate consistent with luxury products instead of the rate used for daily use items.
Eg5M0 TIL between 1908 and 1940, it was possible to buy a house in the Sears Catalogue. The materials needed for building the house would be delivered, with assembly required on site. Over 70,000 homes were built this way.