I’m MIT Technology Review’s chief correspondent, keeping an eye most often on the world of information and communication technologies—and asking my kids when I don’t understand what’s going on. Recent projects have taken me to Kenya to write about mobile-phone-based health initiatives, and Germany to explore how they’ll ramp up renewable power while closing down nuclear plants. My 2008 feature on the Obama campaign’s social-networking operation was selected for The Best Technology Writing 2009.
In an interview with David Talbot, Technology Review’s chief correspondent,
Stephen Wolfram describes what motivated him to launch Wolfram Alpha, how the “knowledge engine” works, and where it’s headed.
Hothead Technologies has developed a system that can sense and warn a user of heatstroke. In this video, an RFID transmitter is fitted in a headband and a white temperature-sensing patch touches the wearer’s forehead. Readings are beamed to a PDA (not shown). When the wearer’s temperature hits 102.5 and stays there for 20 seconds, an alarm sounds on the PDA.