MSNBC says that NASA is mulling a return to the moon starting with robots to look for water at the South Pole. If Nasa gives the go ahead and if the robotic sample return mission finds water, then that could pave the way for human missions and possibly even a moon base. The frozen Lunar water, if found, could aid both in making rocket fuel for return trips as well as making a fresh supply of oxygen and potable water for humans. Scientists believe the South Pole of the moon is important because the Sun never reaches that area keeping water frozen and so it does not vaporize and sublimate away into space. In addition China and India as well as other countries are also planning unmanned moon missions.