The controversial climate-change contrarian, S. Frederick Singer, a former space scientist and government scientific administrator, who holds PhD in Physics from Princeton University and is co-author of Unstoppable Global Warming: Every 1,500 Years, presents the theory that global temperatures have been rising mostly or entirely because of a natural cycle.
Since the 1,500 year cycle was discovered in the early 1980's it's general characteristics have been confirmed by measurements in: tree rings (living, preserved and fossilized), pollen, coral, glaciers, boreholes, stalagmites, tree lines, and sea sediments. The most recent cycles have been recorded in human history with forced migrations, starvation, and disease during the cold portion of the cycle and greater population, expanded farm land, greater crop variety, and extra building during the warm portion.
Although the warm phase of the cycle has been typically more regular than the cold phase, it does not move steadily to a peak and then fall off, but rather moves abruptly higher at the start of the warm phase followed by highly irregular (but modestly higher) temperatures for hundreds of years.
Singer explained that the recent warming the Earth has experienced is not dangerous and is not something humans could alter. Global warming activists such as Al Gore, Singer believes, are hyping the problem. He said that such activists have not come close to demonstrating that human-generated greenhouse gases are contributing to global warming.
If politicians truly wanted to make a change to affect energy use, Singer told the Stanford audience, they would have to increase taxes on gasoline, which would decrease use of vehicles. He believes that such taxes would hit people of low income the hardest.
Singer claimed that many businesses, such as the wind farm industry, are making money off the global warming hype. Singer said that it is essential to convince the proponents of global warming that what they are doing is counterproductive and will not make any difference to the climate.