Since the beginning of the industrial revolution, human populations have sky-rocked. In 1800, approximately one billion people lived on our planet. At that time, we lived on the energy of the sunlight that came down each year or stored in trees and crops over a few years to decades. Once we learned to exploit fossilizedContinue reading “The Downside of the Growth Curve?”
Tag Archives: Prairie House Books
The Braggart Goldenrod
Golden Rod and Vespid wasps (Ptera Hunter, Salem IL, 2006). Yellow attracts many pollinating insects, including these vespid wasps. Bees and wasps have trichromatic vision (three pigments), but they are not the same visual pigments (opsins) that we have. They can see farther into the ultraviolet but less well in the reds. Their clue toContinue reading “The Braggart Goldenrod”
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