Atlas, that cool bipedal robot from Boston Dynamics, has received a pretty significant upgrade.  Most everything above the knees has been redesigned and improved, and it now has a battery pack to enable it to roam freely.  It has also been equipped with rotating wrists to enable it to open doorknobs.  This is all part of the Darpa Robotics Challenge, which regardless of intent seems to be making rapid progress towards creating a real-life Terminator.   Cool but rapid advances in this area of technology can be scary if and when AI takes off.  Read more at the Darpa link above, or over at TechCrunch.