The Brookings Institute released a report in April on the public opinion on climate change in the United States and Canada.
In a survey of 2,130 people, the report found that there is a progressive decrease in the number of people who think there is “solid evidence of global warming” and an increase in the number who think there is no solid evidence.
While a natural event such as this could bring about major changes to the climate, some scientists are warning that there is a possibility for reverse feedback.
In other words, instead of an orbital tilt causing climate change, such as the one that took place in the African continent, current changes in climate could end up causing changes in the Earth's axial tilt.
In June, the Sixth International Conference on Climate Change took place in Washington D. It was organized by The Heartland Institute, headquartered in Chicago, and its primary objective is to "dispute the claim that global warming is a crisis." In 2008, the organization published a report titled "Nature, Not Human Activity, Rules the Climate." Its president, Joseph Bast, talking to the journal Nature recently, discussed public opinion on climate change and the ongoing debate.
"We've won the public opinion debate, and we've won the political debate as well," Bast said, "but the scientific debate is a source of enormous frustration." The climate change debate, as it discussed in the mainstream media, appears to be divided into two major sides.[10 Surprising Results of Global Warming] The Sun's Energy Scientists and astronomers have studied the impact of the Sun on the Earth's climate as far back as the early 1800s.Historians have traced the earliest such studies to the research of Sir William Herschel, who tried to link the frequency of sunspots to the price of wheat.According to Schmidt, while the Sun does have some impact, it is definitively not the reason for current patterns of climate change.“There is an effect,” Schmidt said, “but it is hard to detect in surface records, and is certainly not responsible for recent trends.” Orbital Change Another natural occurrence that has caused major changes in the Earth's climate in the past is shifts in the Earth's orbit. There is a wide acceptance among scientists that the Sahara transformed from a fertile grassland to a desert because of a change to the Earth's orbit.We are changing the Earth’s atmosphere by emitting huge amounts of greenhouse gases such as carbon dioxide, most of which comes from the burning of fossil fuels.Other human activities include agriculture and changes in land-use patterns.One side argues that the current global warming is caused by human factors while the other side insists it is occurring because of natural forces.In the latter argument, two natural causes that dominate the conversation are solar changes and changes to the Earth's orbit.The public discussion on climate change has become so polarized that some scientists don't even acknowledge there is a debate.Climate scientist at NASA's Goddard Institute for Space Studies, Gavin Schmidt, is one of those people.