NASA has introduced a new robot called RASSOR (Regolith Advanced Surface Systems Operations Robot). The robot is supposedly going to be able to harvest soils, water, and even fuel from the moon and other planets. So far RASSOR is only in prototype stage, however, NASA feels confident that the project will be a success and would answer many problems that human space travel faces.
Testing for RASSOR begins is projected to be in early 2014 However, a problem that is common in most inventions is money. Sending a pound cost $4,000 alone thus NASA is working on making RASSOR as lightweight as possible.