Mobile phones ring in a time of change

The potential uses of mobile phones in China never ceases to amaze.

I was in Dalian, Liaoning province, earlier this month and happened to interview Feng Liang, head of a team of 10 research scientists at the Dalian Institute of Chemical Physics, one of 104 China Academy of Sciences national-level research institutes across the country.

He is about to bring to market a mobile phone app which will allow consumers to test whether there is pesticide residue on their fruit and vegetables.