Why Hong Kong needs more trees and what’s preventing it

To stretch his legs and breathe fresh air during Hong Kong’s partial lockdown, Edwin Lau Che-feng took walks in parks and along the city’s greener streets.

Like other Hongkongers, he mostly abided by social distancing restrictions during the coronavirus crisis – he stayed home, avoided shopping centres and steered clear of crowds.

The natural world, though, can have a calming effect in chaotic times, and he felt that – on deserted, tree-lined streets and paths – he could breathe deeply.

“You…

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