The history of humanity as told through one hundred objects from the British Museum in London is this week exploring the world at the time of European discovery - between 1450 and 1600. Today Neil MacGregor is with a pair of white elephants, the size of small dogs. They come from Japan, are made of fine porcelain and take Neil on a journey that connects Japan to Korea and China and to a growing trade network in Western Europe. How did the great skill of porcelain production spread across the Far East? Why elephants? And how did these objects become so desirable to the European elite? He discovers the specific technique of this porcelain style (and traces it to a Japanese potter called Kakiemon) and follows other examples of this same pottery to an English country house. Miranda Rock describes the Kakiemon collection at Burghley House, the present day Kakiemon potter discusses his work and the Korean porcelain expert Gina Ha-Gorian explains how the detailed technology for porcelain production spread. Producer: Anthony Denselow