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Houston's Bug Hunters

Health officials in Houston, Texas, have discovered mosquitoes carrying the virus that causes St. Louis encephalitis in seven areas of the city. NPR's Wade Goodwyn travels with one of the health department's "mosquito men" as he makes his way through Houston's extensive sewer system, trapping mosquitoes and sending them back to the lab for testing. (6:15)

CORRECTION, aired on All Things Considered Sept. 6, 2001:
Wade Goodwyn's report about a mosquito surveillance officer in Houston brought out the science police in the audience. Dr. Victor Sloan of Scotch Plains, N.J., writes this:

"In Wade Goodwyn's excellent story on Houston's mosquito hunters, he said 'when the dry ice melts.' Melting is the act of a solid becoming liquid. Dry ice does not melt, it sublimes. That is, it goes directly from a solid to a gas, without ever becoming liquid. When I was about 10, my father tried to explain this to me. It took me years to believe him."

Copyright 2001 NPR

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