Meet Chen Si. Since 2003, he spends every weekend on the Nanjing Yangtze River Bridge, a notorious spot from which to commit suicide. Chen patrols the bridge, looking for people who might be contemplating suicide. He has stopped more than 400 people from
These humpback whales are engaging in a unique and complex feeding behavior known as bubble-net feeding. This type of feeding is often done in groups as large as 60 whales
Hero of Alexandria's automatic temple doors opened by Fire on an Altar (1st Century AD) [Animated Image by P. Hausladen, RS Vöhringen]
Fluid motion analysis on a truck with 2 different tank types: segmented and not segmented. With the segmented tank, liquid is divided into smaller amounts and put into smaller volumes to move, so it makes easier to maintain the balance of vehicle.
In 1930 the Indiana Bell building was rotated 90°. Over a month, the 22-million-pound structure was moved 15 inch/hr... all while 600 employees still worked there. There was no interruption to gas, heat, electricity, water, sewage, or the telephone servic