Isn global warming just a part of normal long-term weather cycles?
The science on climate change is solid. In 1988, the United Nations appointed a group of more than 2,000 non-partisan climate scientists worldwide to find out whether climate change is real or not. This group, known as the Intergovernmental Panel on Climate Change, has released three conclusive reports since then confirming the scientific basis of global warming. The U.S. National Academy of Science and many other national academies have reached similar conclusions. By studying core samples from glaciers, scientists can calculate average temperatures and analyze atmospheric composition many years into the past. They show that the global climate has indeed varied over time. However, the current rapid, steep rise in greenhouse gas concentrations in the atmosphere in the last 200 years is without precedent. Scientists say the problem will get worse at an accelerating rate unless action is taken. The Royal Society of Canada, our senior body of scientists and scholars, released an internati
