This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology.

It’s always great fun to build your own robot. Sometimes, though, if you’re doing various projects or research, it’s easier to buy an existing robot and then use it to get down to business.

consultants to the US government This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology. Welcome to robot city ...