Some Chinese scientists, however, believe that climate change could hold many benefits for their country. Ren Zhenqiu, research fellow of the Chinese Academy of Meteorological Science, for example, argues that a warmer climate would cause the prevailing westerly summer wind to move further inland bringing more rainfall, improving agriculture yields in previously drought plagued areas. Ren noted that the world's four major civilizations appeared one after the other during earth's warm state 6,000 to 4,000 years ago. North China was warm and damp and covered with forests and the desert existed primarily in the remote west. Furthermore, natural disasters were less frequent during the warm periods.
Desertification is caused by global cold, a severe environment, along with man-created sabotage.
The natural factor is essential. According to a book by Cambridge University, the decline of China's Ming Dynasty corresponds to the arrival of colder weather and frequent natural disasters. It has not been determined as to which is the main reason leading to the climate change - natural influence or greenhouse effect. Gore's Hard Sell A focus group study of homeowning, college graduates in Bethesda, Md. conducted by The Alliance to Save Energy, showed that the global warming scare may be a hard sell to the American public. During a discussion the skeptics tended to convince others that climatic change wasn't happening while an incredulous moderator looked on.