Buy the DVD at http://www.shoppbs.org/entry.point?entry=3407489&sour... Ages of Gold / Indian Mathematics http://www.pbs.org/thestoryofindia PBS Airdate: Monday 5th, 12th and 19th January 2009 at 9pm (check local listings) Michael Wood's fascinating journey through the history of the Indian subcontinent chronicles the incredible richness and diversity of its peoples, cultures and landscapes. India in the Middle Ages saw a series of great flowerings of culture, both in the north and the south. In this episode Michael Wood shows us some of the amazing achievements of medieval India: In astronomy they discovered the heliocentric universe, absolute zero and the circumference of the earth. They mastered the world's first large scale wrought iron technology - the Delhi iron pillar, and their courtly culture was the setting the world's first sex manual, the Kama Sutra. (less info)