If all the salt in the sea were spread evenly over the land, it would be 500 feet thick, about the height of a 40-story building.
Leif Erikson is regarded as the first European to land in North America, nearly 500 years before Columbus.
The U.S. Army admitted it secretly dumped 64 million pounds of nerve and mustard gas agents into the ocean from 1944 to 1970, along with 400,000 chemical-filled bombs and more than 500 tons of radioactive waste.
The blue whale can produce the loudest sound of any animal. At 188 decibels, the noise can be detected over 800 km (500 mi) away.
Elvis Presley is considered the best-selling individual artist of all time, with over 500 million records sold.
Comet Lovejoy released as much alcohol as the amount found in 500 bottles of wine every second during its peak activity.
Adolf Hitler was member #555 in the Nazi Party, but the party started counting at 500 to look bigger.
More than 40% of the Fortune 500 companies in 2010 were founded by an immigrant or the child of an immigrant.