A long, controversial investigation of a polar bear scientist has ended with his government employer saying it does not look like he engaged in any scientific misconduct.

Charles Monnett is a wildlife researcher with the Bureau of Ocean Energy Management, part of the Department of the Interior. He and a colleague, Jeffrey Gleason, wrote an influential 2006 report describing apparently drowned polar bears floating in the Arctic, which they saw during a routine aerial survey of whales.

Religion is one of the most defining characteristics of Latino culture. But pollsters say it plays virtually no role n how they vote. And for two Mexican–American siblings, faith shapes their lives but not their politics.

I learn a lot about Marielena Hernandez just by where she wants to meet for an interview.

Marielena is 21 years old and she greets me while holding her infant daughter Nicole at her childhood home, in Pasco, in Eastern Washington where her parents still live.

We head to Marielena’s favorite place – the kitchen – where her mom is cooking.

Talk of a Tomato War is simmering in agricultural circles, after the U.S. Commerce Department issued a report Thursday that recommends ending an agreement on how fresh tomatoes grown in Mexico are sold in the United States. The issue could create an expanding trade conflict; Mexican officials have said they would retaliate to defend the tomato growers.

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ROBERT SIEGEL, HOST:

According to Bloomberg, President Obama and Mitt Romney have aired nearly 30,000 TV spots addressing the issue of trade with China, and that's just in the past month. Many of those ads aired in Ohio where both candidates are spending a lot of time. NPR's Sonari Glinton explains the Ohio-China nexus.

SONARI GLINTON, BYLINE: If there's a boogeyman in the Ohio presidential sweepstakes, it's China.

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There may be international sanctions against Iran, but not in Afghanistan's border provinces with the Islamic Republic where trade and money-laundering are thriving. Every day, millions in Iranian currency are brought in by taxis ferrying passengers. The Iranian money is exchanged for dollars, which are then shipped back to Iran. American officials recently ordered the Afghan banks to crack down on this phenomenon and it appears to be having some effect.