Fifty Years of Apocalyptic Global Warming Predictions and Why People Believe Them, Part 2

Scientists have known for some time that their predictive models of global warming were at increasing odds with the data. More recently, they have begun to pinpoint some of the faulty assumptions in the models used to make projections (not observations) of global warming. One example of this type of correction is a 2018 article published in the prestigious journal, Science.
Nitrogen availability is a central controller of terrestrial plant growth and, thereby, of the carbon cycle and global climate change. It has been widely assumed that the atmosphere is the main source of terrestrial nitrogen input. Surprisingly, Houlton et al. now show that bedrock is just as large a nitrogen source across major sectors of the global terrestrial environment.
Climate scientists have long known that plants offset some of the effects of climate change by absorbing and storing CO2. But they assumed that the ability to plants to perform this function was limited because the availability of nitrogen in the atmosphere was limited. As an earlier 2003 study published in Science stated, “there will not be enough nitrogen available to sustain the high carbon uptake scenarios.”
But this idea that the only source of nitrogen for plant life came from the air has been refuted in a more recent article, also in Science. Now we know that there are vast storehouses of nitrogen in the planet’s bedrock that plants can also feed on. In light of these findings, Ronald Amundson, a soil biogeochemist at the University of California at Berkeley, told Chemical and Engineering News that “If there is more nitrogen there than expected, then the constraints on plant growth in a high-CO2 world may not be as great as we think.”
With more nitrogen available, plant life might be able to absorb more CO2 than climate scientists have been estimating. This “has the potential to change all projections related to climate change,” because there could be more carbon storage on land and less in the atmosphere than the models assume.
For interested readers, a series of articles on this topic reveal other evidence of weaknesses in climate models used to predict future warming. These models failed to predict a decade-long pause in global temperatures. Nor have various calamities that were supposed to have occurred by now materialized. And a recent paper published in another prestigious scientific journal, Nature, has also concluded that the planet is less sensitive to increases in CO2 than the computer models assume.
Of course the sky is falling, but maybe not as fast as is being predicted by the left-wing media. Beware of self-serving socialist projections based on outdated computer models, or sometimes just nothing at all. The notorious AOC and her ilk can get away with unprecedented levels of ignorance given the current state of American journalism as long as the errors are in the left direction. But any curious citizen can look back at what previous “experts” claimed was supposed to happen over the past half century and confirm just how erroneous and exaggerated their claims have been all along. Read more







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