Floor fight: Cleaning robot Mint versus Scooba

It's the 21st century, and robots are supposed to be doing everything for us now. As with personal jet packs, that hasn't happened. But Evolution Robotics' Mint is one of a number of floor-cleaning robots designed to lighten the housework load. Announced at CES earlier this year and shipping this fall, Mint is an automatic floor cleaner--not a vacuum like iRobot's Roomba. You put a wet or dry dust cloth on the removable cleaning pad, push a button, and Mint gets to work.