Brazil has undergone a demographic shift so dramatic that it has astonished social scientists. Over the past 50 years, the fertility rate has tumbled from six children per woman on average to fewer than two — and is now lower than in the United States.
Demographers say the fertility rate is declining because the country is richer and more urban, but they also point to Brazil's hugely popular soap operas and their portrayal of small, glamorous families.
People who escaped ethnic violence in Jonglei state wait for food rations at a World Food Program distribution center on Thursday. South Sudan gained independence just six months ago, and already ethnic tensions inside the new country have forced tens of thousands to flee their homes.
Credit Michael Onyiego / AP
Food aid from the U.S. is delivered Thursday as part of efforts by the World Food Program to assist people displaced by fighting in the South Sudan state of Jonglei.
One of the nation's least densely populated states has hit a major milestone. Montana's population crossed over the 1 million person mark around the first of the year. While the governor says that's a good sign for the future, some residents say the state's already too crowded.
Fewer than 2,000 people live in Townsend, Mont., a small farming community surrounded by national forests and just south of the gigantic Canyon Ferry Reservoir.
At Penny's Breakfast Station, cook Amber Burchett fries up hash browns in the early afternoon.
People gather around a car as it is removed by a mobile crane in Tehran, Iran. The car was being driven by Iranian nuclear scientist Mostafa Ahmadi Roshan when it was targeted by a bomb Wednesday. Roshan was killed in the blast.
Earlier this week, 32-year-old nuclear scientist Mostafa Ahmadi Roshan was killed by a bomb blast on his way to work in Tehran, Iran.
The attack, carried out with a magnetic bomb placed on Roshan's car by a man on a motorcycle, was like something out of a spy novel. In Iran, however, it's very much a reality. Assassins have targeted five Iranian nuclear scientists in the past two years; four of the attacks have succeeded.