The three tallest buildings in the United States in the 1980s were:
Sears Tower. 1,454 feet, 110 stories (Chicago)
World Trade Center. 1,350 feet, 110 stories (New York)
Empire State Building. 1,250 feet, 102 stories (New York)
No. Identical twins do not have the same fingerprints.
The center of the 48 contiguous states is in Smith County, Kansas, near the town of Lebanon. The center of the 50 states is in Butte County, South Dakota, west of the town of Castle Rock.
Smiling is easier on the face than frowning. It takes 17 muscles to smile and 43 to frown.
Neutrinos are objects produced by the decay of certain subatomic particles. They have energy but little or no mass, and they travel almost at the speed of light.
No, typhoid fever is not the same thing as typhus. Typhus is caused by microbes called rickettsiae and is carried by fleas, mites, and ticks, which in turn are carried by rats and other rodents. Typhoid (also called typhoid fever or enteric fever) resembles typhus in its symptoms but is caused by a different microbe,…
Twentieth-century American physicist John Archibald Wheeler (b. 1911) coined the term black hole to describe a collapsed star whose gravitational field is so intense that not even light can escape from it.