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A team of physicists at Grenoble University in France discovered that trees make different sounds when they are starved for water versus when they are simply thirsty. We hear from Dr. Alexandre Ponomarenko, the lead researcher, and hear a bit of the thirsty tree sounds.

Several cases around the country have striking similarities: teenagers accused of sexual assault, followed by cyberbullying of the victims. Seeking answers is like navigating a minefield of nuance, and narrowing in on teens may be the wrong approach in the first place.

Philadelphia journalist and author Rod Dreher moved back to his hometown in Louisiana after his sister died there in 2010, and adopted the community she left behind. His experiences led to the book The Little Way of Ruthie Leming: A Southern Girl, a Small Town, and the Secret of a Good Life.

In scans of sleeping infants' brains, certain areas light up when they hear angry voices. But is that heightened activation damaging, or does it mean the children are learning to cope?

Six months after Hurricane Sandy, hundreds of low-income New Yorkers are facing homelessness. They've been living in subsidized hotel rooms since the storm, but that funding is about to run out. Advocates say there isn't enough public and low-income housing to accommodate them all.

Great poetry almost never leads to great paychecks. Even award-winning poets need to pay the bills. Many teach, but others are doctors, scientists, lawyers, undertakers or even market analysts. In celebration of National Poetry Month, writer David Orr takes a look at the secret lives of poets.

In Spain, a baby was born in the village of Los Giles three weeks ago. It's the first child to be born there in 45 years. At last count, the village had about 60 residents.

Also: The CIA continues to send bags full of cash to the Afghan leader, The New York Times reports; an explosion, possibly due to a gas leak, injures dozens in Prague; Syria's prime minister survives a bombing; and the last spire is to be placed above new World Trade Center tower.

A bi-partisan Senate immigration policy plan has won support of many key political leaders. But some within the African-American community say it could hurt low wage black workers. Guest host Celeste Headlee discusses the issue with Harry Holzer of Georgetown University; and Lesley Jordan, a food industry worker from Los Angeles.

A play that tackles Islamophobia and questions of Muslim-American identity recently won the Pulitzer Prize for drama. The play is Disgraced, by first-time playwright Ayad Akhtar. He talks with guest host Celeste Headlee about his play and the significance of the award.