Greenhouse Gas.

This article presents information on global warming. James Hansen of the NASA Goddard Institute for Space Studies in the year 1988 gave official endorsement to the scare, by saying he had a high degree of confidence in a cause-and-effect relationship between human activities and record heat. It is reported that the administration former U.S. President George Bush embraced the Earth Summit in Rio de Janeiro and put the whole weight of the U.S. government behind its recommendations. Curbing greenhouse gases became civic virtue, and money flowed for research projects devoted to global warming.