Knowledge investment in terms of both information technology and health care formed part of the deliberations in the 3-day International Knowledge Forum which began here Sunday night. Prince Abdul Aziz Bin Majed, Emir of Madina Region, opened the conference. The forum under the aegis of Saudi Arabian General Investment Authority and the Economic Knowledge City, has attracted a number of officials, and senior thinkers in the Kingdom. About 100 scientists representing some of the oldest science institutions in the world are taking part in the event.