From which academy’ s findings, China Daily summarised the report?

A steadily expanding appetite for coal, fuelled by China’ s rapid industrial growth, has led to a dramatic rise in environmental damage from acid rain, the China Daily, an official Chinese newspaper, reported on December 7,1999. The newspaper summarised the findings of a recent study conducted by the Chinese Academy of Sciences (CAS) and the Chinese Academy of Forestry(CAF).
   The study’ s authors said that after Europe and North America, China is the world’ s third largest region to be affected by acid rain, a type of air pollution formed when oxides of sulfur and nitrogen combine with atmospheric moisture. Nearly 50 percent of China’ s land area is now affected, a figure the researchers expect will rise.
   I had to go to Washington last week for a conference. I arrived at the airport in plenty of time and checked in, but I only had one small case so I decided to take it on the plane as hand luggage. As the flight was not due to board for 45 minutes, I went to a cafe, sat down, and ordered a cup of coffee.
   While I was sitting there drinking my coffee and reading my paper, I was vaguely aware of a woman and her child coming to sit at the next table. I did not pay much attention to them, though, and when my flight was called I reached for my case and left.    An hour later, the plane was in the air and I decided to look at the conference programme to see what I wanted to attend. Imagine my horror when I opened the case and found that it was full of picture books and children’ s toys—and imagine what-the woman must have thought about a case full of men’ s clothes and scientific papers!