In what geologic era did man evolve?
Man evolved in the Pleistocene epoch, which began about 2.5 million years ago and ended about 10,000 years ago.
We now live in the Recent (or Holocene) epoch, beginning about 10,000 years ago.
Fingerprints provide traction for your fingers, helping you to grasp things.
The apple of one’s eye is the pupil, which was likened to an apple because, in the ninth century, it was believed to be a solid round mass.
About 100,000 hairs are on a human head. Human hairs grow about 0.01 inch every day.
Chinese astronomers made the first recorded observation of Halley’s comet in 240 B.C. In 1705, English astronomer Edmund Halley was the first to theorize that comets travel in regular orbits around the sun. Proposing that “the great comet” observed in 1682 made periodic visits about every 76 years, he predicted that it would return in…
A human embryo has its first heartbeat at the age of three weeks, when the heart of the embryo looks like a tube. As it begins to beat, it starts the blood circulating through the few blood vessels that have formed around it.
As of May 1988, the Department of Defense employed the most, with 1,066,805 civilian employees. The Copyright Royalty Tribunal employed the fewest, with seven.