What if your immune system started attacking you, instead of protecting you? The Associated Press is looking at autoimmune diseases, the immune system's dark side. | AP

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Knowledge Matrix on Instagram: "The ball shaped RT G police robot is being tested in China for city patrols. It is designed to move at speeds up to 35 kilometers per hour on streets and squares. The robot carries cameras, flashing lights, and sensors to monitor public areas. It sends real time footage back to command centers to support officers in surveillance and crowd control. These trials are part of China’s plan to use AI robots to extend police presence and improve urban security. #china #k