A study by State University of New York researchers says heat generated from laptops <A HREF="http://news.zdnet.com/2100-1040_22-5485763.html?tag=zdnn.alert">can significantly elevate the temperature</A> of the scrotum, potentially putting sperm count at risk. The study, which included more than two dozen men ages 21 to 35, found that the sitting position required to balance a laptop can raise scrotum temperature by as much as 2.1 degrees Celsius, Sheynkin said. Heat from the laptop itself can raise the temperature by another 0.7 C, bringing the potential total increase to 2.8 C.