By Mike McGee
Most scientists have a difficult time looking at the possibility of the Darwinian evolution of the physical form and structure of human beings in responses to challenges from the environment. We can easily see how a plant or a lower animal can alter its structure and very being, or become extinct either locally or widespread, under evolutionary pressures exerted over only a very few years.
Global warming is almost certainly a product of the increase in the population of the earth from 2 billion to 7.5 billion souls in the span of less than a century. It is mathematically definite that the increase in body heat and cooking fires and auto engine heat alone will raise the natural planetary temperature to some degree. Add on factories and HVAC and land denuded for agriculture or meat, and other things needed to sustain a larger population, and there is even more natural and inevitable pressure increasing the planetary temperature. Continue reading
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