Medical Discovery News, April 5, 2008 Saturday's edition of Medical Discovery News, by UTMB Professors Norbert Herzog and David Niesel, focused on second hand smoke. Among the findings on second hand smoke noted in this segment is "an astounding 50 to 75 percent of children in the United States have detectable levels of nicotine or its breakdown products in their blood." Medical Discovery News airs at 10 a.m. on KUHF-FM in Houston. The program is aired by 48 radio stations.