Numbers

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 charged by each company, which consumer advocates fear will increase if the deal is approved

32,000 Height in feet that an Australian storm carried two paragliders--2,965 ft. higher than Mount Everest--as they prepared for the Feb. 24 World Paragliding Championships

40 Number of minutes Eva Wisnierska, above, blacked out during the ordeal, in which she suffered only frostbite and minor bruising. The other glider, He Zhongpin, was killed by lightning

Sources: New York Times (2); CNN (2); Washington Post (2); BBC; Advertiser (Australia)