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Coronavirus
Spittlebug Foam
Why Do Spittlebugs Make Bubbles?
The nymphs, called spittlebugs, make the foam, although it isn't actually spittle.
Ancient Romans Used Nanotechnology
Why Lego Minifigures Have a Hole in Their Heads
America’s First Woman Olympic Champion Was a Golfer
Japanese People Hide When Doorbell Rings