The Straits Times spoke with Dr Muhammad Nawaz, a senior lecturer in Geography at the National University of Singapore, to discuss the recent incident of the Tanjong Katong sinkhole in Singapore.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
