NAGAKUTE, Japan - Robots of all shapes and sizes were batting fastballs, drawing portraits, teaching the waltz and doing standup comedy at the World Expo - but several years of testing are still ...

In Japan, robots are more than mere gadgetry--they're practically family. Unlike the U.S., where the icons of a dawning era of robots tend to be either the faceless, Frisbee-shaped, floor-scrubbing ...