Washington Metropolitan Area Transit Authority (WMATA) Metrorail has implemented improvements to its automatic train control and signals program, but “is not carrying out some key safety commitments,” ...

The word “bionic” conjures sci-fi visions of humans enhanced to superhuman levels. It’s true that engineering advances such as better motors and batteries, together with modern computing, mean that ...

Most bionic limbs are controlled by electrical signals generated by muscles moving near the attachment site. But when an arm is amputated above the elbow, the remaining muscles aren't enough to ...