The Secretary for the Environment, Mr Edward Yau, spoke at the Green Side of Hong Kong seminar held in Tokyo, Japan, today (June 21). He is demonstrating how visitors can listen to tour guidance on the Geopark in multiple languages by touching the "Speaking Pen" on a map. The "Speaking Pen", developed by the Agricultural, Fisheries and Conservation Department, is the first of its kind in use in a geopark.   Close