This is Special English. I'm Ryan Price in Beijing. Here is the news.A new fund will be set up to pool the knowledge of the country's top scientists to discover the "unique" cause of smog that frequently blankets northern China in winter.Chinese Premier Li Keqiang says blue skies will not be, and should not be, a luxury.The premier highlighted the government's increasing financial support for smog-related research, aiming to tackle the air pollution more effectively, after some scientists pointed out that the causes of smog in northern regions in winter are unique in the world. Environmental experts say there is little domestic research on the severe smog events, which are widespread and long lasting in northern regions in winter. The smog has complicated components, of which 60 to 70 percent are secondary pollutants generated after chemical reactions.Scientists found that the nitrogen oxides in the air could form sulfates, thus worsening the air pollution. It means controls on the use of nitrogen fertilizer in Northern China would work for air pollution controls.The premier said such research results deserve more attention, and encouraged more research on smog to dig out the causes. He said targeted efforts based on thorough research could speed up the pollution control process.This is Special English.The Natural Science Foundation of China financed 41,000 programs last year, allocating funds of 23 billion yuan. That's roughly 3.3 billion U.S. dollars.The programs include research on gravitational waves, robotics and the evolution of land.The foundation will focus on areas including brain science, new materials, advanced manufacturing and information security.It will encourage scientists to continue to push boundaries in research and development.The foundation punished 91 people for misconduct and revoked 33 programs last year.The fund will help to improve the research integrity system, ensure fairness and promote innovation.