Talk of the Nation on KSTX

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JACKI LYDEN, HOST:

Since 2001, more than 1.9 million sons and daughters have been deployed to fight in Iraq and Afghanistan. For many young veterans, homecoming can be a time of mixed emotions and changing family dynamics after a life-changing experience at war.

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JACKI LYDEN, HOST:

This is TALK OF THE NATION. I'm Jacki Lyden, in Washington. Neal Conan is away. Come hell or high water, these days, it can feel like the same thing. More than half of Americans live within 50 miles of the coast, and still more live by rivers and lakes. What is this primal human pull to the water's edge?

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FLORA LICHTMAN, HOST:

This is SCIENCE FRIDAY. I'm Flora Lichtman. In his new book "Hallucinations," Oliver Sacks writes that you see with your brain, not with your eyes. And his book suggests our brains can play some bizarre tricks on is. Dr. Sacks describes a musician who sees intricate but unplayable sheet music superimposed on his field of vision.

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FLORA LICHTMAN, HOST:

And one last salute to science before the weekend. Here are some news you can raise the glass to. Microbiologist Tomas Villa and colleagues report that they may be able to bioengineer better beer foam. That's right.

TOMAS G. VILLA: Beer foam. Foam is what you like the most in a beer. And a beer drinker wants foam to stay longer, right?

LICHTMAN: Of course. And the secret to long-lasting froth, proteins, produced by barley and yeast during fermentation.

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FLORA LICHTMAN, HOST:

This is SCIENCE FRIDAY. I'm Flora Lichtman, filling in for Ira Flatow this week. Last week, when Hurricane Sandy sent a surge of salty water into cities and towns up and down the East Coast, among the casualties were thousands of research subjects: lab mice. A building at New York University's Medical Center flooded, and thousands of mice and rats that were being used to study cancer, heart disease and all kinds of other medical disorders died.

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FLORA LICHTMAN, HOST:

Here's a big, giant question for you: Why do we believe what we believe? And how is it that two people can look at the exact same set of circumstances and see two completely different things? That philosophical question is at the center of a new book where, to put it another way, one person's beautiful miracle is another person's ecological crisis.