Hackers can manipulate outdated algorithms to give two very different documents the same digital signature.
Carefully grown carbon-nanotube arrays could be the basis of new energy-storage devices and chip-cooling systems.
Why technologists are so confident.
Nick McKeown believes that remotely controlling network hardware with software can bring the Internet up to speed.
A traveling-wave reactor could use widely available depleted uranium and operate for 60 years without refueling.
BioNanomatrix cofounder Han Cao explains how his company’s nanofluidic chip could dramatically decrease the cost of genome sequencing.
Donald Sadoway describes why we need a better battery and how his new battery works.
Stuart Parkin, a research fellow at IBM’s Almaden Research Center, describes racetrack memory, a new concept for storing data. Parkin and his team believe that racetrack memory could match the capacity of magnetic hard drives and the ruggedness of flash memory, making it a possible replacement for both.
Vivek Pai explains how broadband access alone cannot bridge the digital divide.
Siri cofounders Adam Cheyer, Dag Kittlaus, and Tom Gruber describe how an intelligent software assistant would work, and how their product's technology is rooted in highly ambitious artificial-intelligence research, funded by the U.S. military.