Weekend Roundup

• Boston Dynamics’ Big Dog robot has learned a new trick — tossing concrete blocks with its mechanical jaws. (9 News World)

• Dartmouth College’s Yeti polar robot, with support from the National Science Foundation and NASA’s Jet Propulsion Lab, is helping find cracks in the ice in Antarctica. (Slate) 

• Fort Hood’s new aviation unit was activated this week. The 21st Cavalry Brigade will oversee flights from the Gray Eagle UAV. (KCEN TV)