The "six" in the expression comes from the six feet that make up a fathom -- which is a little less than two meters.

VOA: special.2011.03.06

Census data from 2007 and 2008 show that young people under the age of 25 make up less than three percent of America's self-employed.

VOA: standard.2010.01.31

"You can conquer disease,end conflicts, and make change from the bottom up.

VOA: standard.2009.07.11