Minnesota scientist skeptical of global warming

LETTER: Local scientist skeptical of global warming | Hutchinson Leader

From Jon Hartzler
Ph.D. and retired science professor, Hutchinson

Global warming is a complicated issue. First, is warming really happening? If it is significant, is man causing it? Finally, can man intentionally alter the climate for the good by reducing carbon dioxide?
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In conclusion, we do not know the answers to the questions posed initially for certain. Does it make sense for the U.S. to spend billions of dollars to try to fix Mother Nature? We humans are mighty arrogant if we think we can, particularly when you factor in China with its billions of people and uncooperative nature. The Chinese laugh at the Kyoto Protocol and the “civilized” world trying to fix “global warming.” Our puny little effort (but very costly) when China refuses and puts their economy first makes us seem insignificant. Other huge, developing countries like India also complicate the situation.
It seems to me there are lots of reasons for an informed person to be skeptical of global warming and its “solutions.” Also, no one seems to acknowledge the huge benefits to crop production of warmth and carbon dioxide.