NASA needs robotic upgrades for work on Mars

After not faring well in the DARPA Robotics Challenge, NASA is hoping its Valkyrie humanoid robot will do much better working on Mars.
The space agency has given two robotic prototypes to scientists at MIT and Northeastern University to build software and put together hardware adjustments that will make the robots autonomous and dexterous enough to aid human astronauts or even take their place on "extreme space" missions.
"Advances in robotics, including human-robotic collaboration, are critica