Professor Khan is currently Director of UNESCO Regional Science Bureau for Asia and the Pacific and UNESCO Representative for Brunei Darussalam, Indonesia, Malaysia, the Philippines, and Timor-Leste. Since graduating from the University of Birmingham, he has made outstanding achievements in the areas of water and environmental management in Australia and the United Nations including CSIRO Medal for Research Achievement 2007 and Great Wall Friendship Award 2017. He is currently Honorary Professor at several universities.