To welcome the 43th International Museum Day, the Inner Mongolia Museum of Natural History in Hohhot, capital of North China's Inner Mongolia autonomous region, holds a series of activities on May 18 to teach children and adults about science. Nearly 100 students attended courses on fossils, deserts, volcanoes, and more. They also carried out experiments and played games to give them a better understanding of the laws of nature. [Photo/people.com.cn]