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Is the Bald Eagle Really Bald?
If you get the chance to see a bald eagle in flight, it’s a magnificent sight to behold. Soaring high on currents of rising…
How Does a Ballpoint Pen Work?
How Does a Ballpoint Pen Work? Inside a ballpoint pen is a little plastic or metal tube that holds a supply of ink. At…
How Does a Vacuum Bottle Work?
How Does a Vacuum Bottle Work? A vacuum bottle is a bit like a super-insulated jug. It works by insulating whatever is stored in…
How Are Wax Crayons Made?
Crayon manufacturing is a simple process, but one which is still relatively labor intensive. Wax crayons begin as wax and colored powders ca
Why Have the Eggs of Birds so Many Colors?
Why Have the Eggs of Birds so Many Colors? The coloration of wild birds’ eggs is for protective purposes. The parent birds that incubate…