Trayvon Martin's autopsy shows he had marijuana in his system the night he was killed by neighborhood watch volunteer George Zimmerman, and a gunshot to his chest came from close range, according to nearly 200 pages of previously undisclosed documents released Thursday.

World leaders will huddle at Camp David Friday with the focus on Greece as it stumbles toward an unprecedented eurozone exit that holds wildly uncertain repercussions for the global economy.

Three people were killed Thursday after a chaotic shooting scene that had crowds running for cover in a crime-ridden section of Louisville.

Hundreds of firefighters worked to combat a growing blaze that was scorching terrain around a scenic canyon in northern Colorado.

Facebook is set to raise up to $18.4 billion in its IPO and become the first U.S. company to be worth more than $100 billion at its debut, as investors bet on a big pop in the stock when it begins trading Friday on the Nasdaq.

In closing arguments, lawyers for the former presidential candidate said that while he may have been a "bad husband," he did not violate any federal laws in doing so.

A possible source of the so-called "birther" issue -- or at least a potential cause of the rumors that have dogged President Barack Obama -- has been identified.

Former Minnesota Gov. Tim Pawlenty slightly changed his tune on his vice presidential prospects Thursday when he didn’t rule out the possibility that he might get picked as Mitt Romney’s running mate.

The tweeting masses are on board with the cause of the moment, gay marriage, by a roughly 2.6-to-1 margin, according to a report from Pew's Project for Excellence in Journalism.