<p>Shoppers walk through an open air market in downtown Milan, Italy, on Wednesday. In 2010, more Italians died than were born for the fourth consecutive year according to the national statistics agency.</p>
October 16, 2011
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October 16, 2011 9 p.m.
A whole lotta people
Challenges loom as world population hits 7 billion
She's a 40-year-old mother of eight, with a ninth child due soon. The family homestead in a Burundi village is too small to provide enough food, and three of the children have quit school for lack of money to pay required fees.