If ever there was a reason for noise-canceling headphones, dental drills might be it. A prototype dental-noise-canceling device piggybacks onto your MP3 player and headphones, blocking out the high-pitched drill and dental noises while letting the dentist's voice through.
How has technology changed the ways that we interact with one another? Sherry Turkle's Alone Together: Why We Expect More from Technology and Less from Each Other is the third in a trilogy exploring this question. Social networking, e-mail and texting, Turkle says, provide the façade of socialization but ultimately leave their users dissatisfied and disconnected. It may be time to reflect and reconsider the role we really want technology to play in our lives.
A radio station in a box! This invention from two Canadians puts everything you need for a broadcast, from microphones to transmitting equipment, into one 40 pound container. And it broadcasts for over 18 miles, too, so it's got a bit more range than, say, Mister Microphone.