Regarding his letter of June 26, I respectfully suggest that Phillip Boggio use a less ad hoc method to learn about global warming and what is causing it. The scientific community has a powerful, rigorous process for ascertaining truth and is inherently very skeptical and conservative in reaching conclusions. Yet, they have found global warming to be scientifically supported.
Fortunately, thousands of climate scientists have already done this research, so Boggio doesn't have to go through the steep learning curve to ascertain scientifically valid data. They have concluded that humans are creating global warming largely through our combustion of fossil fuels, which transfers carbon from the earth's crust to our atmosphere. Contrary to what Boggio reported, the 10 hottest years on earth since 1880 are, in order: 2010, 2005, 1998, 2013, 2003, 2002, 2006, 2009, 2007, 2004 and 2012. It's a scary trend.
Boggio was also incorrect in stating that moving away from coal will increase the cost of electricity. A bipartisan state legislative committee studying NorthWestern Energy's energy costs from 2009-2013 found that the power from two wind farms, Spion Kop and Judith Gap, cost only $0.033 and $0.034/kWh, respectively, which includes their firming power from natural gas. Power from Colstrip 4 cost $0.062/kWh. Wind power cost only 55 percent as much as coal power.
We can do better than coal, and future generations deserve better than coal.