by John Markoff July 25, 2009 A robot that can open doors and find electrical outlets to recharge itself. Computer viruses that no one can stop. Predator drones, which, though still controlled remotely by humans, come close to a machine that can kill autonomously.

by Andrew Mack July 6, 2009 Behind the modest progress in arms-reduction agreed by Barack Obama and Dmitry Medvedev is a larger trend towards a world without nuclear weapons, says Andrew Mack.