With the Winter Olympics approaching, many people will soon be tuning in to watch events that take place on ice, such as figure skating, speed skating and ice hockey. An ultrathin, super-lubricating layer of water on the ice's surface is essential for skaters' graceful glides. Inspired by this surface, researchers reporting in ACS Nano have developed a treatment for osteoarthritis that enhances lubrication and reduces friction and inflammation in a rat model of the disease.