This is a straight lift from Watts Up with That
Moore looks at the historical record of CO2 in our atmosphere and concludes that we came dangerously close to losing plant life on Earth about 18,000 years ago, when CO2 levels approached 150 ppm, below which plant life can’t sustain photosynthesis. He notes:
“A 140 million year decline in CO2 to levels that came close to threatening the survival of life on Earth can hardly be described as “the balance of nature”.
Now, with 400ppm in the atmosphere, the biosphere is once again booming (see figure 8 below). He also points out how environmental groups and politicians are using the “crisis” of CO2 increase to feather their own nests:
“A powerful convergence of interests among key elites supports and drives the climate catastrophe narrative. Environmentalists spread fear and raise donations; politicians appear to be saving the Earth from doom; the media has a field day with sensation and conflict; scientists and science institutions raise billions in public grants, create whole new institutions, and engage in a feeding frenzy of scary scenarios; businesses want to look green and receive huge public subsidies for projects that would otherwise be economic losers, such as large wind farms and solar arrays. Even the Pope of the Catholic Church has weighed in with a religious angle. Lost in all these machinations is the indisputable fact that the most important thing about CO2 is that it is essential for all life on Earth and that before humans began to burn fossil fuels, the atmospheric concentration of CO2 was heading in a very dangerous direction for a very long time. Surely, the most “dangerous” change in climate in the short term would be to one that would not support sufficient food production to feed our own population.”
The link to the full (24 pp) report is below.
The picture of the Lauterbrunnen (loudstream) valley in Switzerland is pretty and relevant. Do you see the shape of that valley? It is in the shape of a steep “U”, characteristic of the erosion pattern formed by ice. Within near-historical time, some 9 to 12,000 years ago, that valley was filled with ice, all the way to the top of the steep walls. Solid, grinding, flowing ice, at a latitude of Canada’s capital, Ottawa, 46 degrees north. There has been global warming.