bet365 best casino games Donald Worster，Born in California, USA in 1941，In 1971, he received a doctorate degree in Yale University，Since 1989, he has been the Outstanding Professor of Hero American Studies at the University of Kansas from 1989 to retirement。He is one of the founders of the history of the American environment，Chairman of the American Environment History Society，Representative works "Dust Storm: The Great Plain of the United States in the 1930s" (1982) has won the highest award in the American History "Bankerrovt Award"。His translated works in Chinese include "Natural Economic System: History of Ecological Thought", "Dust Storm: In the 1930s in the Southern Plain of the United States", "Under the West: Nature and History of the West of the United States" and "River of the Empire: water、Growth of Drought and Western United States "。　 

　　Summary of content:The new field of environmental history as a new field of historios has emerged in the mid -1970s。Environmental History The main researcher interaction with nature，Change people's way of thinking about past，Provided new issues for the academic community、Research objects、Methods and information。Its research includes three levels，"Nature" and "Culture" and the integration of the two。In recent years，Research topics that have received widespread attention in environmental history include the integration of environmental history and natural sciences、Climate change、Infectious disease、Water、City、Environmental Justice、Species、sex、Internationalization of environmental history, etc.。[translated by Xu Lu, Liang Xiaoyi, Li Xinghao]