Daily Cuts - How to spot signs of a sinkhole forming and ensure pedestrian safety

A tourist remains missing days after falling into a sinkhole in a busy area in Kuala Lumpur, Malaysia. A second sinkhole has since emerged, prompting authorities to close off the road. On Asia First, Andrea Heng and Hairianto Diman seek to understand how a sinkhole is formed, where they’re usually found, how to identify them and what authorities must do now to ensure pedestrian safety with Nawaz Muhammad, Geomorphologist, Geography Department, NUS