Isotopic analysis of boron and carbon used to analyze mass extinction on Earth.
https://phys.org/news/2020-10-driver-largest-mass-extinction-history.html
look up Milankovitch cycles, a perceptive mind with a righteous deduced hypothesis, which had to wait for the analytical methodology to affirm his thesis into donnée,....
Milly died before the potassium-argon dating analysis to prove his insight was developed,....
