Enter to win every day in CTNOW's 21 Days of Summer Giveaways. Click here to see today's prize.

Lego bot

Lego Group's new educational robot "LEGO MINDSTORMS NXT", equipped with a 32-bit microprocessor, USB 2.0, and Bluetooth, is displayed during a press preview in Tokyo June 6, 2006. Toru Hanai / Reuters