Rebounding from an Ice Age | Stars, Cells, and God

Join Hugh Ross and Kevin Birdwell as they discuss new discoveries taking place at the frontiers of science that have theological and philosophical implications, including the reality of God’s existence.

Rebounding from an Ice Age
Earth has undergone approximately 25 ice age cycles over the last several million years, with 85 to 90% of that time spent in conditions much colder than the present warm period. Yet, every cold glacial period thus far has ended with a warm “interglacial” period similar to the present global climate. But why does this happen? What allows an Earth with a much higher percentage of ice and snow cover to recover from cold temperatures associated with the deep glacial periods of our recent past?

References:
G. H. Denton et al., “The Last Glacial Termination,” doi:10.1126/science.1184119

Lauren J. Gregoire, Paul J. Valdes, and Antony J. Payne, “The Relative Contribution of Orbital Forcing and Greenhouse Gases to the North American Deglaciation,” doi:10.1002/2015GL066005

V. Masson-Delmotte et al., “GRIP Deuterium Excess Reveals Rapid and Orbital-Scale Changes in Greenland Moisture Origin,” doi:10.1126/science.1108575

Didier Paillard, “The Timing of Pleistocene Glaciations from a Simple Multiple-State Climate Model,” doi:10.1038/34891

M. E. Raymo, “The Timing of Major Climate Terminations,” doi:10.1029/97PA01169

Gary Shaffer and Fabrice Lambert, “In and Out of Glacial Extremes by way of Dust-Climate Feedbacks,” doi:10.1073/pnas.1708174115

F. Vimeux et al., “Glacial-Interglacial Changes in Ocean Surface Conditions in the Southern Hemisphere,” doi:10.1038/18860

Additional Resources:
Javier Vinós, Climate of the Past, Present, and Future: A Scientific Debate, 2nd ed. (Madrid: Critical Science Press, 2022).

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[chekideh]

🌷Thank you both for helping us better understand our temporary home and God's marvelous hand all over its design & construction.🌷

[josephsimmons]

Excellent. Thank you for all your dedication.

[fudgedogbannana]

Thanks a lot, I thought I had it all figured out til now. Dr. Ross talked about the last and previous ice ages before and I had a pretty good understanding, now I find that I have to recognize a few other factors. I should have stayed in school, though back in the 1970's when I was in school I believed that we were entering another ice age. Thank you Dr. Ross

[pierreabbat]

"AMOC weakens by about 2 Sv (10%)". What do sieverts have to do with ocean currents?

[jrltog]

#Matthew24_37 without the weight of a much bigger ice age on its poles crushing the entire crust of Earth the the spin of Earth causes most of the equatorial bulge. When I first looked it up 27 miles was the difference between the equatorial diameter & pole to pole diameter. #English74 #Jesus74
#John47
#EnglishOrdinal #7LetterWords
A=1Z=26 #AZ27

[justcruisin]

The margin of error regarding to time is laughable.
Do better and be more accurate with fewer assumptions please.