Fact-checking sites like PolitiFact referee assertions by politicians, public figures and pundits. The fact-checking movement has been gaining momentum — and fans. But PolitiFact has come under fire after announcing its "Lie of the Year": a claim by some Democrats and liberals about a House Republican plan to change Medicare.

In one FedEx warehouse, workers sift and sort through 166 packages per minute on long conveyor belts. More online retailers are offering later-guaranteed arrivals than ever. It's a procrastinator's paradise — even for the facility's manager, who says he hasn't started Christmas shopping yet.

Kansas City, Mo., schools are losing their accreditation on Jan. 1. Missouri law allows students from unaccredited districts to enroll for free in nearby school systems, so the suburban districts outside Kansas City are bracing for an influx of students.

As his bus tour continued, Mitt Romney won an endorsement from former President George H.W. Bush. He pumped his own gas and talked about buying a horse. Also, he spoke French.

The Pentagon says that poor communication, faulty map information and a lack of trust all contributed to the Nov. 26 shooting that killed 24 Pakistani troops along the border with Afghanistan.

The journal Science has withdrawn a study from 2009 that suggested an obscure virus causes chronic fatigue syndrome. The findings raised patients' hopes for effective treatments. But scientists who raced to confirm the viral link failed to do so.

The Federal Aviation Administration announced new rules Wednesday designed to reduce potentially dangerous pilot fatigue. Bart Jansen of USA Today discusses the changes and why the FAA felt compelled to adopt them, and sleep medicine expert Charles Czeisler explains how the body responds to fatigue.