MELAKA: Cigarette butts were the most common form of litter found along the Pantai Puteri recreational beach at Tanjung Kling here, says a Southern Waste Management (Environment) official.

Dressed in street cleaners’ uniforms and armed with tongs, university students Oscar Lau Ho-yin, Sam Tang Chung-yin and Krson Ho Ka-chung walk around Hong Kong’s street corners picking up ...