16-08-19 1. Why do Olympic divers use small towels? Olympic gold medalist Laura Wilkinson explains that the name of these little towels are called shammys. The shammy, made out of rayon or poly-vinyl, can hold a lot of water and dry quickly, the former US di...

14-07-02 Thought to dwell（居住，存在于） mostly near the ocean's surface, Chilean devil rays (Mobula tarapacana) are most often seen gliding through shallow, warm waters. But a new study by scientists at Woods Hole Oceanographic Institution (WHOI) and inter...