MIT helicopter flies through a house using laser guidance ...

Little battery powered electric helicopters are lots of fun, but they tend to crash into stuff without an expert hand on the controller. One solution is to make a helicopter that can guide itself using GPS, but this doesn't work too well indoors where there are no useful GPS signals. Boosting their ultra tech-nerd credentials to the highest level possible, the Robust Robotics Group at MIT's Computer Science and ... Technology, iPhone, Mobiles, Nokia, and Gadgets ...