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The Obama campaign on Wednesday escalated its attack on Mitt Romney's business career, with Vice President Joe Biden scheduled to aggressively question how Romney's management of the private equity firm Bain Capital might translate into running the U.S. economy.

A new analysis of TV ads so far this election cycle finds that 70 percent of the messages have been negative — a trend spearheaded by the heavily financed superPACs supporting the candidates. At this point in the 2008 election, 91 percent of TV ads were positive.

A Pittsburgh food writer offers a lesson in making pesto out of stinging nettles and garlic mustard — springtime greens often considered weeds.

New reports Thursday showed the U.S. economy may be poised for a rebound. The U.S. trade deficit narrowed more than expected in September as exports rose to record levels, and jobless claims fell to a seven-month low.

Congressional leaders from both parties say the payroll tax cut is a must-pass measure. It's just not entirely clear how it's going to happen.

Election officials upheld their ban of nearly half of the presidential candidates running in next month's contest. Among them are two leading Islamist candidates and the intelligence chief for former President Hosni Mubarak. The decision radically alters the race for a post that will shape Egypt's political landscape.

According to The Washington Post, the United States continued to send detainees to facilities it knew abused prisoners. The Post reports the U.S. received warnings long before a U.N. report found "systematic torture" in Afghan intelligence detention centers.

An outbreak of botulism linked to organic Italian olives makes it clear that even food that sounds pristine can harbor deadly pathogens. Organic foods may be more vulnerable to some pathogens because of the way they are grown. Food processors fight botulism with heat, salt, and acid.

Congressional investigators are demanding documents from the White House, Vice President Pence and the State Department. So far, they've had little success.

The 22-year-old gymnast led Team USA to their fifth consecutive world championship. She is now just three medals away from becoming the all-time world leader.