Coins are usually made of copper and another element, such as zinc or nickel. Currency paper is composed of 25 percent linen and 75 percent cotton. Red and blue synthetic fibers of various lengths are distributed evenly ...Read More

You probably never thought about a cat as being either left- or right-pawed, but over 40 percent are either lefties or righties. That means there’s quite a few out there who are ambidextrous. Luckily for them, they can ...Read More

According to the U.S. Lawn Tennis Association, a tennis ball is supposed to bounce between 53 and 58 inches when it is dropped on concrete from a height of 100 inches. The concrete surface should be 4 inches thick.

Okonomiyaki is considered to be Japan's answer to pizza. It consists of a potpourri of grilled vegetables, noodles, and meat or seafood, between two pancake-like layers of fried batter.

The first heavy-drinking U.S. president, as well as the first presidential college dropout, James Monroe - like John Adams and Thomas Jefferson before him - died on Independence Day, the last president to date to bear that...Read More

During her husband's presidency, Martha Washington was formally addressed as Lady Washington