4 ms·
FYI: https://en.wikipedia.org/wiki/Faint_young_Sun_paradox https://en.wikipedia.org/wiki/Faint_young_Sun_paradox Solar radiation intensity has been increasing
by dvdkhlng 7y ago
FYI: https://en.wikipedia.org/wiki/Faint_young_Sun_paradox https://en.wikipedia.org/wiki/Faint_young_Sun_paradox
Solar radiation intensity has been increasing gradually since the earth was formed. Current sun intensity may not allow for the same CO2 concentrations that earth tolerated in prehistoric times.