And you can see, going back to the years 800, it moved fairly steadily along until you get to the Industrial Revolution, until you get to the fossil fuel emissions barrage that drove the CO2 concentrations so high. As CO2 went up and as the planet heated, spring came sooner. And so you see here earlier and earlier and earlier and earlier comes the day of peak bloom. I thought that was interesting because I thought a 1200 year data set kept by the Japanese people was interesting. (09:54–10:01)
CLAIM
Asserts that increased CO2 and global warming have caused earlier springs.
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