Together with other government surveillance data and systems, federal authorities can now monitor American cities at a scale that would have been difficult to imagine just a few years ago, advocates ...

Four-legged robots that scramble up stairs, stride over rubble, and stream inspection data — no preorder, no lab coat required.

Luis Martinez was on his way to work on a frigid Minneapolis morning when federal agents suddenly boxed him in, forcing the SUV he was driving to a dead stop in the middle of the street.