Inspired by bats and dolphins, this ultrasonic tech lets machines “see” in pitch-black and chaotic environments.

A solar-powered surveillance drone with a wingspan larger than a Boeing 747 jumbo jet could fly for weeks or months at a time ...

Watch a seamless cycle of takeoff, underwater cruise, and skyward reemergence in this student-built hybrid drone.

Starlink is a life-changing Internet service that connects people and villages too remote for towers and cables to reach. My ...