Indicators Of Intelligence
Commentator Brandt Ayers talks about the survey that ranks his home town at the bottom of the intelligence heap, based on the number of books that residents buy. He says the publishing company that commissioned the survey is hardly in a position to belittle anybody, considering the kind of books it prints .
Melissa Block talks to Jonathan Hagstrum of the U.S. Geological Survey about his recent study that finds that homing pigeons use "infrasound" as a navigational cue.