
Biology
How Does the Immune System Work?
The immune system is a layered defense network of barriers, rapid innate cells, and precise adaptive cells that learn to recognize threats and remember them for future attacks.
howbiology

Technology
How Do Self-Driving Cars Work?
Self-driving cars fuse cameras, radar, LiDAR, maps, and machine learning to perceive the road, predict what others will do, plan a safe path, and control steering, braking, and acceleration in real time.
howtechnology