October 19, 2024
ONE GOOD LINK
BRITANNICA.COM
Why Does Hair Turn Gray?
Hair turns gray as melanocytes—the cells that generate melanin, which gives hair (and skin) its coloration—deteriorate because of age, environment, or disease. Hair doesn’t gray uniformly: it may gray on some parts of the body earlier than on other parts. The age one goes gray is determined in part
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Oct 18
What musician earned a fifth-degree black belt at age 80? -
Oct 17
What country has no mosquitos? -
Oct 16
What commonplace vehicle began as a “dandy horse”? -
Oct 15
What familiar hassle awaited astronauts returning from the moon? -
Oct 14
How did Native American tribes that spoke different languages communicate? -
Oct 13
Why did people in the 1800s bite beads of sulfuric acid? -
Oct 12
What holiday forbids the wearing of leather shoes? -
Oct 11
What animal helped clean a particle accelerator? -
Oct 10
What word comes from the Greek for “spiral wing”? -
Oct 09
“Happy Birthday to You” evolved from a song originally used for what other purpose?