What would it take to put a walking robot on the moon?

A humanoid robot could be walking on the moon – and drawing the Japanese flag on its surface – by 2015, according to a plan proposed by a group of Japanese companies. Experts say wheeled or many-legged robots would be easier to operate on the moon's uneven terrain, but backers of the proposal say a two-legged android would make a bigger splash in the public imagination.

via DailyYomiuri