by Wm. Robert Johnston
"If we keep using cars, the ice caps will melt and we'll all drown!" This is a myth, just as false as fearing the Sun will die as a result of using solar power. However, as often as I hear it--particularly from people who should know better--I thought I would address it here. First, here is a summary of the facts:
- Despite what you may have been told, it has NOT been proven that human-caused global warming is occurring, and in fact there is substantial reason to reject such claims.
- The best explanation for the evidence is that whatever global warming trend exists is mostly the result of natural influences like variations in the climate system and variations in solar radiation.
- The suggestions that human activities will cause significant changes in global temperature and sea level in the next century are flawed predictions which haven't been confirmed by observations.
- The solutions to this apparently non-existent problem proposed by environmentalists would not have a significant effect on climate, but they would cause a significant amount of human suffering.
- Based on what we know now, in the next 100 years a rise in sea level of 0.1 meters (4 inches) would not be surprising; those predicting changes of 0.5-2 meters (1.5-7 feet) are using flawed models.
- If all the icecaps in the world were to melt, sea level would rise about 60-75 meters (200-250 feet). This could not result from modern human activities, and from any realistic cause would take thousands of years to occur.