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The chorus of denial is, well, undeniable.
But what are the most prestegious scientific organizations in the US and the world saying?
American Association for the Advancement of Science, the world’s largest general scientific society:
The scientific evidence is clear: global climate change caused by human activities is occurring now, and it is a growing threat to society. Accumulating data from across the globe reveal a wide array of effects: rapidly melting glaciers, destabilization of major ice sheets, increases in extreme weather, rising sea level, shifts in species ranges, and more. The pace of change and the evidence of harm have increased markedly over the last five years. The time to control greenhouse gas emissions is now.
Most scientists agree that the warming in recent decades has been caused primarily by human activities that have increased the amount of greenhouse gases in the atmosphere (see Figure 1). Greenhouse gases, such as carbon dioxide, have increased significantly since the Industrial Revolution, mostly from the burning of fossil fuels for energy, industrial processes, and transportation. Carbon dioxide levels are at their highest in at least 650,000 years and continue to rise.
There is no doubt that climate will continue to change throughout the 21st century and beyond, but there are still important questions regarding how large and how fast these changes will be, and what effects they will have in different regions. In some parts of the world, global warming could bring positive effects such as longer growing seasons and milder winters. Unfortunately, it is likely to bring harmful effects to a much higher percentage of the world’s people. For example, people in coastal communities will likely experience increased flooding due to rising sea levels.
The scientific understanding of climate change is now sufficiently clear to begin taking steps to prepare for climate change and to slow it. Human actions over the next few decades will have a major influence on the magnitude and rate of future warming. Large, disruptive changes are much more likely if greenhouse gases are allowed to continue building up in the atmosphere at their present rate. However, reducing greenhouse gas emissions will require strong national and international commitments, technological innovation, and human willpower.
Please read about global climate change at the IPCC.
The message is clear. Policy makers and people in general need to start work on change to reduce carbon dioxide and other greenhouse gasses.
A slightly more comical (and hair-raising) view, but one of the best videos your author has ever seen for a quick overview of the problem of global climate destabilization is given by Greg Craven, science teacher in Corvallis, Oregon:
A very well organized rebuttal of skeptics claims: gristmill.grist.org/skeptics .