Globalised manufacturing and procurement mean that a lot of high-polluting, heavy duty jobs are transferred to China. We will ask major companies, such as Wal-Mart, Microsoft and IBM to put pressure on their Chinese suppliers.

Some of the areas in China have been under very grave water scarcity: for example, the north China plain; they are facing a very serious water shortage. Per capita levels have dropped to very serious levels, including in Beijing.

The motivation should come from regulatory enforcement, but enforcement is weak, and environmental litigation is near to impossible. So there's an urgent need for extensive public participation to generate another kind of motivation.

China's environmental conundrums will not be solved by changes within government alone. New mechanisms are needed to allow the communities which may be affected by a given plan, and citizens concerned about the environment, to join in.

I hope they can see that as a consumer, if they express themselves, they may make an impact and leverage their impact on the brands, and the brands can leverage their buying power on tens of thousands of polluters - suppliers - in China.

Like in those cancer villages, a group of old ladies kneeling down in front of me, you know, holding a bottle of polluted water and hoping that they would get help, this is the voice that got drowned in this complex, globalized supply chain system.

Globalisation has powered economic growth in developing countries such as China. Global logistics, low domestic production costs, and strong consumer demand have let the country develop strong export-based manufacturing, making the country the workshop of the world.

Even the government understands that the environmental challenge is so big that no single agency can handle it. It needs collaboration among all the stakeholders - companies, governments, NGOs and the public. Public accountability will be the ultimate driving force.

Of course, as consumers, we want cheap and good products; however, if these production processes are exceeding wastewater discharge standards and even causing heavy metal pollution, they will cause long-lasting damage to the ecological environment and public health.

Pollution is a serious one. Water pollution, air pollution, and then solid hazardous waste pollution. And then beyond that, we also have the resources issue. Not just water resources but other natural resources, the mining resources being consumed, and the destruction of our ecosystem.

Beijing was such a different city. There were so few cars, I could walk in the middle of the road. In the summer, the streetlamps attracted swirling bugs. I loved those bugs: crickets, praying mantis, all kinds of beetles. I also have a vivid memory of dazzling sunlight coming out of the sky.

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