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.
Space
How Do Astronauts Sleep in Space?
Astronauts sleep in small pods or tethered sleeping bags, using scheduled lighting, eye masks, ventilation, and routine to compensate for microgravity, noise, and 16 sunrises per day.
Earth Science
How Do Tsunamis Form?
Tsunamis form when earthquakes, landslides, or eruptions suddenly displace a huge column of water, sending long waves across the ocean that grow taller as they slow in shallow water.
Technology
How Do Barcodes Work?
Barcodes encode numbers as patterns of black bars and white spaces. A scanner reads reflected light, converts the pattern into digits, validates it with a check digit, and looks up the product in a database.
Biology
How Do Bees Communicate?
Honeybees communicate food location with a waggle dance: direction is encoded by the angle of the waggle run relative to vertical, and distance is encoded by how long the waggle lasts.