Dhaka, May 6 -- Climate change is wreaking havoc all around the world. Taking the matter most seriously, China a long time ago started combating it. During my visit to Guangzhou and Shenzhen - two major cities of China, I witnessed the Chinese government's dedication to preserving green spaces and safeguarding rivers and waterways.

Honking in Bangladeshi streets is a common phenomenon. But vehicles run in Chinese cities without making any noise pollution, as the horn is banned there. However, the absence of such devices is not causing accidents. Even no traffic police officers were seen standing at the intersections - whom we usually see in Dhaka controlling traffic at the behest of their hands. The vehicles - mostly battery-run - follow...