Science

The current poster child for global warming is a polar bear, sitting on a melting iceberg. Some health officials argue the symbol should, instead, be a child.

That's because emerging science shows that people respond more favorably to warnings about climate change when it's portrayed as a health issue rather than as an environmental problem.

Our solar system has a pleasing architecture. There are four inner rocky, or "terrestrial", planets on tight, closely spaced orbits. Then comes the asteroid belt. After that comes four outer gas/ice giants on much more widely space orbits.

It's quite lovely but may also be quite unusual.

What are people doing when they're speaking a language?

According to Tufts University linguist Ray Jackendoff, writing in his new book:

"They're making complex sounds that express their thoughts. Words are part of the system in people's heads that they use to build messages."

Jackendoff is quick to add:

Downed a few too many drinks at the office happy hour? The shape of the glass may be at fault — at least in part — for encouraging drinkers to overindulge. The reason, scientists say, is simple: A curved glass interferes with the ability to judge alcohol intake.

Seth Horowitz is an auditory neuroscientist at Brown University and author of the new book The Universal Sense. Horowitz says sound is a sense that's always "on" — and we take it for granted. He says it developed to trigger deeply-held emotions.

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IRA FLATOW, HOST:

I'm Ira Flatow. This is SCIENCE FRIDAY. We're going to talk now about West Nile virus, it showed up in 48 states, reports in viruses in either people or birds or mosquitoes, and it's not exactly clear just why the virus is so widespread this year or why the state of Texas has been particularly hard-hit.

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IRA FLATOW, HOST:

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IRA FLATOW, HOST:

Joining us now is Flora Lichtman, our multimedia editor, with our Video Pick this week.

FLORA LICHTMAN, BYLINE: This week, Ira, we're going to the bat cave. Well...

FLATOW: I saw the movie, you know. So not that, not that, I know.

LICHTMAN: Exactly. Another bat cave.

FLATOW: Oh, shucks.

(LAUGHTER)

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY. I'm Ira Flatow. In a few days, my next guest will be in Florida. He's going there to testify against Big Tobacco in a lawsuit brought by a smoker with health problems. Oh, you didn't know that tobacco lawsuits like this are still going on today? You certainly don't hear a lot about them in the news. But some 8,000 more cases just like this one exist in Florida alone.