Two high school students, Sum Ming Wong and Kin Pong Li, both living in Hong Kong have designed and built a door handle that kills germs, thus preventing the spread of disease through hand contact. They demonstrated their handle at the Intel International Science and Engineering Fair held last month in Pittsburgh—taking second place in the materials science category. One of the ways that ailments such as cold and flu are passed is via contact, and one of the main avenues is via door handles—a sick person coughs into their hand then uses the handle to enter a bathroom, office,...
