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That's what the Kentucky Republican wants to know, after being criticized for using the work of others without attribution. Paul, who appears to be preparing for a run at the 2016 GOP presidential nomination, is now on the offensive.

A national project found that hundreds of former Michigan students had enough credits for an associate degree — but they'd never claimed them. Thousands more were close. Those credentials could make ex-students more employable or eligible for better-paying jobs.

In 2001, Portland, Ore., was the first to develop a new kind of streetcar system. Success there led to a resurgence, with at least two dozen cities planning, building or expanding trolley lines — places like Atlanta; St. Louis, Mo.; and Tucson, Ariz. But some wonder whether it's the best way to spend limited transit dollars.

As mobile devices dominate our work and personal lives, people are buying fewer pens, especially high-end ones. That's doomed many mom-and-pop pen shops, but a few are still holding on, relying on those who treat pens like jewelry.

Negotiators from Iran and six world powers resume talks Thursday in Geneva on Iran's nuclear program. Iran's Supreme Leader says he's not optimistic, and U.S. officials say "no deal is better than a bad deal." Still, Iran's desire to get out from under crippling economic sanctions may drive progress forward despite the long odds.

Blockbuster is going to shut all of its company-owned stores. Some franchise stores will stay open. At its peak, the video rental chain had about 9,000 stores.

In other news, Colombia's president says he will press on with talks with FARC rebels, and Tajikistan's president wins re-election with more than 83 percent of the vote.

Economists thought the government would say the economy slowed. But the initial estimate shows a slight pickup from the 2.5 percent pace of the second quarter.

Kevin Ware suffered a gruesome injury during last spring's NCAA men's basketball tournament. He reacted with a confidence and sense of humor that won him many fans. Now he's back on the court.

An American man who hijacked a plane to Cuba nearly 30 years ago will be in a U.S. court Thursday. William Potts returned from Cuba this week, saying he wanted closure. He was arrested immediately.