Did you know that it was not until 1850 that our world reached the one billion mark? By 1930 we reached two billion. It took only thirty more years for the worlds population to reach three billion. We have now arrived at five billion. Statisticians tell us that by the end of the twentieth century well have seven billion.
Until 1800 the top speed was twenty miles an hour as people traveled on horseback. With the arrival of the railroad train, almost overnight we jumped to 100 miles per hour. By 1952 the first passenger jet could travel 500 miles an hour. By 1979 the Concorde cruised at more than 1,200 miles an hour. But even back in 1961 the astronauts were orbiting the earth at 16,000 miles per hour.