NPRWorld

U.S. Marines with 3rd Battalion, 5th Regiment and the Afghan National Army provide cover as they move out of a dangerous area after taking enemy sniper fire during a security patrol in Sangin, Afghanistan, in November 2010. During its seven-month deployment, the 3/5 sustained the highest casualty rate of any Marine unit during the Afghan war, losing 25 men.

In 1975, the Khmer Rouge told the family of Peou Nam that he had been executed. After 36 years of separation, hardship and an unusual series of events, the family was reunited in June this year. Son Phyrun visits his father at his farmhouse in southern Cambodia's Kampot province.

A man checks his car in Havana. In October, Cuba legalized the sale and purchase of automobiles for all citizens. Now, Cubans who leave the island permanently can transfer ownership of their car to a relative or sell it outright. Previously, Cuba could seize the vehicles of those who emigrated.

Watch as global population explodes from 300 million to 7 billion.

Lujiazui, Shanghai's financial district, includes the world's third- and sixth-tallest buildings. The city's population is 23 million.