The 75th episode of Shanghai Through Our Eyes features British expat Marie Harder, a professor at Fudan University's Department of Environment Science and Engineering.

Back in the United Kingdom, Harder studied waste recycling for residents. She first came to Shanghai for a visit in 2011.

When I arrived in Shanghai, the (waste-sorting) policy wasn't so important as it is today, she said. No city in the world has achieved food-waste diversion like Shanghai. This achievement is already world-leading. They (Shanghai and China) should be extremely proud of themselves.

Harder said she is not a fan of big cities, but Shanghai is an exception. She has accepted the university's invitation to stay until her retirement.