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Also: Maryland's legislature OKs a gay marriage law; federal authorities now investigating Penn State scandal.

A new case taking on affirmative action in higher education is set to be heard in the Supreme Court this fall. In 2003, the court ruled that universities could consider racial diversity in admissions. But today the make-up of the court is very different. Host Michel Martin discusses the case with two law school deans.

Host Michel Martin and the Barbershop guys discuss singers Chris Brown and Rihanna. Brown was convicted of assaulting Rihanna three years ago. Now, they've released remixes of songs featuring each other. The guys also weigh in on affirmative action and whether race should be considered in college admissions.

In 2004 he nearly lost his life, and a leg, in Iraq. But Canon worked hard at rehab and his doctors performed one of the most extensive limb constructions ever tried. NPR followed his story. Last week, 29-year-old Canon died.

Elderly people taking Haldol, an older antipsychotic, were twice as likely to die within six months of starting the drug as those taking Risperdal, a commonly used newer drug. Older antipsychotic drugs shouldn't be used to dementia symptoms in the elderly, a new study of the options concludes.

Today's media environment only encourages outrageous statements. Attacking Girl Scouts, threatening to kill U.S. senators and invoking the Bible to limit teachers' pay have all drawn headlines for lawmakers in recent weeks.

When doctors autopsied tuberculosis patients, they described finding round, white swellings, especially in and around the lungs. Medical historian Howard Markel describes how those potato-like growths led to the disease being called tuberculosis, from the Latin tuber.

Computer chip makers have long struggled to build ever-smaller transistors to allow faster, more powerful computers. Writing in the journal Nature Nanotechnology, a team of scientists describes what may be the ultimate limit of that struggle — a transistor made of a single atom. Michelle Simmons, a physicist at the University of New South Wales in Australia and leader of the project, discusses the work.

Bloomberg News reporter John Lauerman volunteered to have his DNA sequenced by Harvard researchers to demystify the process for the public. What he didn't expect to uncover was that he possessed two gene variants--one linked to rare blood disorders and the other to a higher risk of Alzheimer's.

The standard picture of the moon is of a long-dead object, geologically speaking. But using observations from cameras on board the Lunar Reconnaissance Orbiter, Thomas Watters and colleagues say in the journal Nature Geosciencesthat there are signs of more recent tectonic activity on the moon, within the last 50 million years.