No more exhaling into the palm of your hand and sniffing quickly to try to determine if your breath stinks. BreathAlert, from the Japanese health-products company Tanita, works by measuring, among other things, the amount of volatile sulfur compounds given off by bacteria.
Satellite maps are also available.
You can explore all of the bones in the human body at this site. Recommended for students of medicine. This site proves nostalgia doesn't have to be pretty. The Web site is also packed with entertainment activities, including a biweekly comic strip.