The lesson examines the key concepts of global warming, the greenhouse effect and human causes of global warming. (tes.com)
The concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive. (dairyreporter.com)
Even Trump himself: «The concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive.» (politics.stackexchange.com)