What caused the ice ages? Tiny ocean fossils offer key evidence
Liz Fuller-Wright, Office of Communications, Dec. 10, 2020
[
www.princeton.edu]
Ai, X.E., Studer, A.S., Sigman, D.M., Martínez-García, A.,
Fripiat, F., Thöle, L.M., Michel, E., Gottschalk, J., Arnold, L.,
Moretti, S. and Schmitt, M., 2020. Southern Ocean upwelling,
Earth’s obliquity, and glacial-interglacial atmospheric CO2
change. Science, 370(6522), pp.1348-1352.
[
science.sciencemag.org]
Yours,
Paul H.
"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)