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.

The e-commerce colossus known for its promise of quick deliveries showed off robotic arms and other high-tech warehouse tools in Silicon Valley, saying AI is not only powering innovations but accelerating how quickly they are developed by the second largest employer in the United States.

"Blue Jay" robotic arms billed as capable of efficiently picking, sorting, and consolidating at a single workstation were among AI enhanced equipment items demonstrated by Amazon at a conference held in a massive distribution center in Silicon Valley.

The arrival of Blue Jay, being tested in South Carolina, follows that of

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