G: you know, an increasing number of people are sufferning from cancer these years in China.

A: I heard! Cancer was the top killer in China last year.

G: any idea why?

A: I think environmental factors are probably the main cause. In Beijing alone, 70-80 percent of all fatal cancer cases are related to the environment.

G: some say that's just the cost of rapid economic development over the past two decades.

A: many people are wondering if China is heading towards an environmental disaster.

G: oh, that goes too far , doesn't it?

A: maybe, maybe not. One in four citizens has no access to clean drinking water. One third of the urban population is breathing polluted air. Finally, seven of the world's ten most polluted cities are in China.

G: is there any quick solution?

A: not really. But the government has taken some measures to reverse it.

G: like what?

A: so far the government has stipulated and reversed the relevant laws on water, air and solid waste pollution in order to achieve sustainable development.

G: that should be a big help. However, we really need to promote the awareness of environmental issues among individuals. That way we can all help together.

A: definitely, we have only one earth and we all have to share it.