Homeland Security has declared an end to what it called Operation Metro Surge. Even so, immigration agents are still camping out in hospital parking lots. And drones fly overhead in ...

My offwidth-wrangling mentors wore long earrings and makeup on their most difficult climbs. Five years later, I finally understand why.

The alien-like machines, described as ‘legged metamachines’, are built from autonomous modules that can be snapped together in a variety of forms. Researchers say the approach could lead to robots ...