Unblok-ing success: (From left) Ng, Ong and Tham showcasing their prize-winning biodegradable FOG filter made from palm oil waste.
POURING used cooking oil down the sink or drain may seem like an easy way to discard it, but it comes with consequences.
When fats, oils and grease (FOG) solidify in sewers, they cause blockages and overflows in pipes, driving up maintenance costs and worsening flood risks.
