Seun Dupe sits with her newborn twins in a maternity hospital in Lagos, Nigeria. Nigeria is Africa's most populous country with more than 160 million people. UNICEF estimates that number will swell to nearly 1 billion by 2100.
Bob Thomas fills up his pickup truck at the municipal-run gas station in Somerset, Ky. There are no candy bars, 44-ounce soft drinks or lottery tickets sold. The price of gas here is $3.36 a gallon, about 20 cents lower than the statewide average.