linkedin post 2022-01-09 08:06:38

Uncategorized
SALUTE TO WARREN HAMILTON. “The Plate Tectonic Pump: How the Transition from Single Lid to Plate Tectonics Stimulates Biological Evolution" presented by Dr. Robert Stern and Dr. Taras Gerya. Originally presented at GSA 2019 in Phoenix in the session "Unconventional Ideas and Outrageous Hypotheses: In Honor of Warren B. Hamilton”. https://lnkd.in/ev5Grjwz View in LinkedIn
Read More

linkedin post 2022-01-09 08:04:26

Uncategorized
ORBITAL CONSEQUENCES. “This may have generated torques and frictional heating that caused not only development of an asthenosphere, enabling plate tectonics, but also influenced convection in the outer core. This in turn enabled differential core motions and development of an inner core and internal strong dipolar magnetic field for the first time, shielding Earth's surface from solar-particle bombardment and enabling evolution.” https://www.sciencedirect.com/science/article/pii/S0012825219302636?via=ihub View in LinkedIn
Read More

linkedin post 2022-01-09 08:02:54

Uncategorized
TECTONICS + MAGNETIC SHIELD. “The approximate coincidence of the Ediacarian biological leap forward with the onset of plate tectonics makes a connection between them possible. The link may be that Earth's asthenosphere and its internally generated strong dipolar magnetic field both originated then as a result of Sun/Earth/Moon orbital mechanics.” https://www.sciencedirect.com/science/article/pii/S0012825219302636?via=ihub View in LinkedIn
Read More

linkedin post 2022-01-08 07:16:48

Uncategorized
STRANGER THAN STRANGE. “Kangaroos have three vaginas and two uteruses. “Koalas, wombats and Tasmanian devils all share the three-vagina structure. The side ones carry sperm to the two uteruses (and males marsupials often have two-pronged penises), while the middle vagina sends the joey down to the outside world. The programme also suggested that this might explain why marsupial embryos are born at such a premature stage of development.” https://lnkd.in/dNKiT4Z6 View in LinkedIn
Read More

linkedin post 2022-01-08 07:15:30

Uncategorized
PROKARYOTIC RESISTANCE TO RADIATION. “There is an enormous range in resistance to ionized radiation among modern unicellular life forms, including prokaryotes, which Sharma et al. (2017) showed to correlate with Mn2+ ions in antioxidant complexes within cells. This idea can perhaps be tested directly by analysis of cellular residues in Precambrian rocks.” https://www.sciencedirect.com/science/article/pii/S0012825219302636?via=ihub View in LinkedIn
Read More

linkedin post 2022-01-08 07:13:49

Uncategorized
MAGNETIC RADIATION SHIELD. “Atmospheric oxygen is known to have been increasing in the relevant era but this is poorly quantified. A newly-formed, weak dipolar magnetic field originating about 600 m.y. ago, strengthening at about 550 m.y., could plausibly have shielded against ionized radiation, enabling the Ediacarian start and Cambrian acceleration of multicellular evolution.” https://www.sciencedirect.com/science/article/pii/S0012825219302636?via=ihub View in LinkedIn
Read More