Ice Cubes That Track Alcohol Intake

It was fall semester last year when 23-year-old Dhairya Dand decided to hit up a party at the Massachusetts Institute of Technology. Several hours later, he found himself in the hospital. He'd had an alcohol-induced blackout.

From the hospital room, Dand went back to MIT's Media Lab, where he's a researcher, and spent the next three weeks inventing Cheers - alcohol-aware ice cubes that glow and groove to ambient music. More important, the ice cubes change colors if you've had a few too many. When he presented the idea to his friends, they weren't so cool on the idea.