Periscope

Doubts over new green panels on building walls
Urban planners and environmental experts are doubtful about the effectiveness of the government's plan to fix vertical green panels on the building walls of a public housing estate in construction to help reduce the heat and save energy consumption. [more]

Save the shades: experts

Five months after the savage pruning of more than 200 trees at Leung King Estate in Tuen Mun, green advocates are still pushing for more regulations on tree felling and attention to proper trimming. [more]

'Green cancer' stays rampant

Speedy invasion of fast-growing Mikania in private farmlands and rural roadsides propels a leading local green group to plan for a large-scale campaign to clear the weed at the end of this year. [more]

Imported plants for greening - to cure or to kill?
Wedelia, a plant imported by the government for greening in Hong Kong but listed as one of the worst invasive alien species in the world, is spreading and will jeopardise the survival of native vegetation in the territory, lawmaker Albert Chan Waiyip says. [more]