BBC 6 Minute English - Why did Singapore ban gum?

source: Chau Pham     2017年6月8日
This week's question
When did the Singapore government outlaw chewing gum?
a) 1982
b) 1992
c) 2002
Listen to the programme to find out the answer.

Vocabulary
antisocial: not caring about other people and society in general
to outlaw something: make it illegal
resin: a sticky substance produced by trees
approachable: friendly and easy to talk to
chemical bond: a situation where one thing is joined firmly with another.
labour-intensive: involves a lot of people to do something
two of a kind: very similar
degrades: breaks down into smaller pieces over time
pellet: small round ball of something that has become hard