Eight Americans killed in an Afghanistan attack were believed to be CIA employees, a source says. Five Canadians, including a reporter (above), died in another attack. FULL STORY
On AC360°, Dr. Sanjay Gupta looks back at the octuplet mom and actress Natasha Richardson's death, while CNN.com's Year in Review digs deeper into five of the biggest health stories that emerged in 2009. FULL STORY
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