This easy-to-build walking reindeer can be constructed with only a bow motor, battery, wires, and a few other parts.

Among the most visible signs of the disruption were the clusters of Waymo's white Jaguar I-Pace robotaxis idling motionless at intersections. The company, which operates more ...

Waymos stopped in the middle of intersections during a mass power outage in San Francisco over the weekend, causing the robotaxi company to suspend service for a day.

Fresnel lenses were invented over two centuries ago to help lighthouses prevent shipwrecks. They're still enhancing safety, but now it's for cars and trucks.