Guided by students with a remote control, Ranger navigated 108.5 times around the Barton Hall indoor track, about 212 meters per lap, and made about 70,000 steps before it had to stop and recharge. The 14.3-mile record beats the former world record set by Boston Dynamics' BigDog, which had claimed the record at 12.8 miles
What I find most impressive is the robot's remarkably human appearance, as you can see from the photo provided by Cornell University.
http://www.technewsdaily.com/walking-robot-breaks-distance-walking-record-0884/ via Geekologie
The work is absolutely fascinating in how they're trying to mimic how human beings walk. The energy save was produced almost entirely by harnessing kinetic energy that humans do naturally when walking.
What is that metal thing besides it?
These scientists blow my mind.