Ancient farmers caused first global warming

Indo Asian News Service: Ancient farmers were responsible for increasing the Earth's temperature by about 0.9 degree Celsius over a period of 8,000 years - almost as much as global warming has caused in the past 150 years. The finding, by a new study, suggests that early agriculture was as powerful as the whole industrial revolution, says Feng He, lead author and a climate scientist at the University of Wisconsin, Madison. The study, however, says that the "net warming" caused by early humans was only 0.73 degrees Celsius,......

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