National

The U.S. Supreme Court's expected ruling in June on Arizona's immigration law will set the blueprint for states where many officials say they face a crisis in trying to crack down on rising numbers of illegal residents.

Yet population changes and various research indicate that the great flow primarily of Latino illegal immigrants, which lasted at least two decades, ended several years ago.

With National Dog Bite Prevention Week set to start Saturday, the Insurance Information Institute wants Americans to know that:

-- Insurers paid $479 million in home owner insurance claims involving dog bites last year, up 16.1 percent from the year before.

-- The number of such claims rose 3.3 percent, to 16,292.

-- The average cost per claim grew by 12.3 percent from the year before, to $29,296.

A paralyzed man with a spinal cord injury to the C7 vertebrae is able to move his fingers again. Surgeons at Washington University School of Medicine rerouted working nerves in the patient's upper arms to restore some hand function. Dr. Ida Fox discusses the procedure described in the Journal of Neurosurgery.

Transcript

IRA FLATOW, HOST:

(Unintelligible) at the beginning of the program about Cathy Hutchinson having not being able to drink anything without the help of caregivers for 15 years. She was paralyzed from the neck down. But she's very famous, very famous this week, because thanks to new technology described in the journal Nature, she took a very famous sip of coffee this week. You probably saw it on television or the Internet.

Studies show that the power of suggestion can induce itchiness — but scientists don't know what this irritation is, what causes it, or why it feels so good to cure. Marc Abrahams, editor of the Annals of Improbable Research, talks about how talking about the science of itches might have you scratching right now.

Prosecutors released a trove of new information detailing the investigation of Trayvon Martin's death. Martin was the unarmed Florida teen killed by neighborhood watch volunteer George Zimmerman in February. Host Michel Martin speaks with NPR's Greg Allen, who says the material could be helpful to both sides in the case.