This museum was established with the purpose of promoting natural science and community education. In addition to the main museum in Tokyo’s Ueno Park, there is a branch in Shinjuku and a botanical ...[more]

These are non-silicon solar cells that store solar energy at the earth’s surface. Most solar cells today use silicon semiconductors, but the manufacturing process requires much energy and high ...[more]

The Central Japan Railway Company has developed a technology to remove the dirt from glass windows simply by spraying water during the day. Metal with a photocatalytic effect is made into sheets ...[more]