Every year World Environment Day (WED) is celebrated on 5 June to spread awareness and to courage people to take action to protect the environment. To echo the WED, Campus Sustainability Office staged a series of activities during on 5 and 6 June 2019 named under the theme ‘Live GREEN’. A lunch talk was held as Dr. Xoni Ma, Founder and Education Director of Outdoor Wildlife Learning Hong Kong, came and presented interesting facts and findings related to the conditions of the forest and vegetation in Hong Kong. He offered all participants rich information on the development and conservation of Hong Kong’s country parks. Bonus Green Coins Day was featured to give GreenCoin users extra Coins upon their sustainable actions. Also, a polyfoam collection exercise was arranged to engage staff and students with dedicated boxes set up in canteens to collect polyfoam materials. This activity received an overwhelming response and collected approximately 7 Kg polyfoam in two days.