We should welcome the fact that CO2 has risen to “levels not seen on Earth for millions of years,” even if the “fact” is less certain than you might believe. Plants have been trying to cope with a CO2 famine for millions of years, a famine that is finally ending. With self-assurance worthy of Dr. Pangloss, the article implies that pre-industrial CO2 levels, around 280 ppm, were the “best of all possible worlds.” But 280 ppm is much closer to (sea-level) starvation levels of about 150 ppm, when many plants die, than to the optimum levels for plant growth, which greenhouse operators already know are greater than 1000 ppm. There is fossil evidence of CO2 starvation at the end of the last ice age, when CO2 levels dropped to below 200 ppm. Even today’s 400 ppm is far too low for optimum plant growth.
Moore: 'CO2 is lower in the atmosphere today than it has been through nearly all the history of life and that global temperature during the ongoing 2.5 million-year-long Pleistocene Ice Age is colder than it has been for the past 250 million years'
'During the past 150 million years CO2 had steadily declined to such a low level that plants were seriously threatened with starvation during the peak of the last few glacial cycles. Thankfully, our CO2 emissions have inadvertently reversed that trend, bringing some balance back to the global carbon cycle. All of this can be verified yet the narrative of “climate catastrophe”, which has no basis in science, is hollered from rooftops around the world.'