Talk of the Nation

The documentary Bully caught national attention when it received an R rating for harsh language from the Motion Picture Association of America. Harvey Weinstein, co-chairman of The Weinstein Company — which distributed the film — discusses the decision to re-edit the film for release with a PG-13 rating.

Foreclosure filings in March fell to their lowest level in four years. Some analysts see the market healing and turning around, yet others argue the next wave of foreclosures are just around the corner. NPR's Chris Arnold discusses how housing markets are faring across the nation.

In a new book, Relics: Travels in Nature's Time Machine, Harvard entomologist and photographer Piotr Naskrecki documents his travels, from New Guinea to New Zealand and beyond, looking for organisms whose genes can tell us something about conditions on Earth millions of years ago.

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY. I'm Ira Flatow. It's easy to assume that we humans rule the Earth. After all, we can clear-cut forests, we can chop the tops off mountains. We can harvest anything we want from the land or the sea. But before we get too cocky, let's not forget about those other titans of the Earth, the bugs.

How do astronauts take a bath in space? What happens to their sense of smell in a weightless environment? Two NASA astronauts aboard the International Space Station discuss the challenges of life in low Earth orbit and how their research is a stepping stone for future space exploration.

In a new book, To Forgive Design: Understanding Failure, engineer Henry Petroski chronicles disasters from the sinking of the Titanic to the destruction of space shuttles Challenger and Columbia. Petroski discusses why these accidents are often caused by factors other than a design flaw.

From farting fish, to the laws of stupidity, Marc Abrahams (editor and co-founder of The Annals of Improbable Research) has a knack for finding science that "makes you laugh, and then makes you think." Abrahams discusses some improbable research, and why science that might at first seem absurd, matters.

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JENNIFER LUDDEN, HOST:

This is TALK OF THE NATION. I'm Jennifer Ludden, in Washington. Neal Conan is away. Baby boomers are the first generation with large numbers of dual-earner couples heading into retirement. That means negotiating the golden years is all the more complicated. Now there are two careers, two hard-earned nest eggs and quite possibly two competing visions of how and when to retire.

"Do I freak you out?" It's a question that haunts writer Mary Elizabeth Williams and others whom she describes as "physically different, in ways both small and large."

Williams' surgery to remove cancer more than a year ago left a 5 centimeter bald spot on the back of her head. She doesn't mind it — it's a badge of survival — but her daughter, Beatrice, fusses about it from time to time.

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JENNIFER LUDDEN, HOST:

This is TALK OF THE NATION. I'm Jennifer Ludden, in Washington. Neal Conan is away. The man who Florida police first declined to arrest now faces second-degree murder charges for the shooting death of Trayvon Martin. George Zimmerman claims he is not guilty under Florida's Stand Your Ground law, which allows for the use of force in self-defense.