A “planetary emergency—a crisis that threatens the survival of our civilization and the habitability of the Earth”—that is how former Vice President Al Gore describes global warming. Most environmental groups preach the same message. So do many journalists. So do some scientists.
You have probably heard the dire warnings many times. Carbon dioxide (CO2) from mankind’s use of fossil fuels like coal, oil, and natural gas is building up in the atmosphere. Carbon dioxide is a greenhouse gas—it traps heat that would otherwise escape into outer space. Al Gore warns that global warming caused by carbon dioxide emissions could increase sea levels by 20 feet, spin up deadly hurricanes. It could even plunge Europe into an ice age.
Science does not support these and other scary predictions, which Gore and his allies repeatedly tout as a “scientific consensus.” Global warming is real and carbon dioxide emissions are contributing to it, but it is not a crisis. Global warming in the 21 st century is likely to be modest, and the net impacts may well be beneficial in some places. Even in the worst case, humanity will be much better off in 2100 than it is today.
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