the data for 1750 to 1900 are from the un report "the world at six billion" whereas the data from 1950 to 2015 are from a un data sheet. the card was updated each year. most people who saw them did not pay much attention. just remember not to ever let anyone catch you at it." the lead climber wears a harness attached to a climbing rope, which in turn is connected to the other climbers below the lead climber. information on his early life is scarce. it was built in 1912, and is a two-story, rectangular brick building with a raised basement. 