Most Hongkongers can’t wait to crank up the air-conditioning when they get home, and savour the blissful coolness of a shopping mall during the city’s sweltering summers. But a 72-year-old retired civil servant is making it his mission in life to spread an unpopular message: it’s time to switch off. Lam Chiu-ying, director of the Hong … Continue reading It’s time to switch off to save the planet, ex-chief of Observatory Lam Chiu-ying tells aircon-addicted Hongkongers