Amazon on Wednesday said it is speeding up the automation of its warehouses with the help of artificial intelligence and robotics, raising questions about the future of human workers.

From bananas to burgers, store aisles to sidewalks, an army of robots has descended upon Chicagoland with the singular mission to bring us food.

A wireless eye implant developed at Stanford Medicine has restored reading ability to people with advanced macular degeneration. The PRIMA chip works with smart glasses to replace lost photoreceptors using infrared light. Most trial participants regained functional vision, reading books and recognizing signs. Researchers are now developing higher-resolution versions that could eventually provide near-normal sight.