According to news.gov.hk, changing people's mindset is the key to reducing the use of plastic bags, Secretary for Environment, Transport & Works Dr Sarah Liao says, adding supermarkets will offer more incentives to urge customers use fewer plastic bags. Speaking on RTHK talkshow "Dialogue with Secretaries" today, Dr Liao said the proposed plastic bag tax was a complex issue which had to be examined carefully. As required by law, shops in Taipei no longer offer free plastic ...