6.1 Average number of children that women bear in Rwanda, whose population is expected to double by 2030
3 Limit on children per family proposed by Rwandan legislators to curb rising poverty levels
30 Years a dollar coin can circulate, compared with 18 to 22 months for a dollar bill
$500 million Amount the U.S. would save each year if dollar bills were replaced by coins, like the new, golden George Washington ones released Feb. 15
$13 billion Value of the proposed merger of XM and Sirius, the only companies licensed to offer satellite radio in the U.S.
$12.95 Monthly fee...