Northpark Center was the first air-conditioned mall in the U.S.
The hottest recorded day in Phoenix was June 26, 1990, when the temperature hit 122 degrees.
Cacao, the main ingredient of chocolate is the most pest-ridden tree in the jungle.
The electric shaver was patented on November 6, 1928.
The White House in Washington, DC was the biggest house in the United States until the Civil War.
The mouse is the most common mammal in the US.
The Egyptians thought it was good luck to enter a house left foot first.
Each day in the US, animal shelters are forced to destroy 30,000 dogs and cats.
Papaphobia is the fear of Popes.
According to a Harvard School of Public Health study, nearly twice as many people commit suicide in the 15 states in the US with the highest gun ownership rates than in the six states with the lowest rates.