When Were Ducking Stools in Use?
When Were Ducking Stools in Use? Ducking stools first came into use as a punishment for women at the beginning of the 17th Century and were used in England as late as...
Read More
What Is a Camel’s Hump For?
What Is a Camel’s Hump For? A camel uses its hump as a portable storehouse of fat from which to draw nourishment when food is scarce. These odd protrusions are mounds...
Read More
When Does a Tadpole Become a Frog?
When Does a Tadpole Become a Frog? Frogs’ eggs become tadpoles within two weeks of being laid in the water, but tadpoles may take anything from two months to three...
Read More
Why Do Penguins Have Small, Stiff Wings?
Why Do Penguins Have Small, Stiff Wings? A penguin wing is called a flipper. It is a hard, rigid paddle covered with tiny stiff feathers that are not waterproof (unlike...
Read More
Where Do Sponges Come From?
Where Do Sponges Come From? The soft, absorbent, natural sponges used in baths are the skeletal remains of a marine animal. Biologists once thought sponges were plants....
Read More