Breakthrough discoveries start at the bottom.

How can robots learn to stabilize on rough terrain, walk upside down, do gymnastic maneuvers in air and run into walls without harming themselves? Robert Full takes a look at the incredible body of the cockroach to show what it can teach robotics engineers.

A playful, but not implausible, look at what the machines want us to know.

Tesco posted its sharpest drop in quarterly sales in decades, heaping more pressure on Chief Executive Philip Clarke, who has struggled to adapt the U.K.'s biggest retailer to the heavy discounting of its rivals.

An internal probe of General Motors's delay in recalling defective cars is expected to conclude there was no concerted coverup, but that managers operating in isolation failed to make connections.