*All*,
The Dino Killer (author of the K-Pg extinction event 65 Ma) has always been another of my weird little interests, this time crossing with geoengineering in a big Venn-like way. Would you believe that just last night, the late-night anchor (Ms. Aby Philips) on our national cable news network (CNN) this story? *October 30, 2023 (Monday)* *Science and technology* · In a study published in *Nature Geoscience <https://urldefense.us/v2/url?u=https-3A__en.wikipedia.org_wiki_Nature-5FGeoscience&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=4X_J64AruotpaUNYsTgX81-8pDn-elCZWNxaHwp7UT0&e=>*, researchers suggest that solid particulates <https://urldefense.us/v2/url?u=https-3A__en.wikipedia.org_wiki_Particulates&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=leOrgBGEpl_Cj5Vt3358l1fMe-K_dMOqMWj8qWfaJww&e=> (predominantly silicate <https://urldefense.us/v2/url?u=https-3A__en.wikipedia.org_wiki_Silicate&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=e3cV1F1MDjS0ORTAMLKJExmnb1MkeAKDSsXOJ9eG388&e=>) from the Chicxulub asteroid impact <https://urldefense.us/v2/url?u=https-3A__en.wikipedia.org_wiki_Chicxulub-5Fcrater&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=iydj6oDVsOezLAAzOtB5HeRdGBQOMbtpUbAAPzLs8RE&e=> played a dominant role in the radiative forcing leading to the Cretaceous–Paleogene extinction event <https://urldefense.us/v2/url?u=https-3A__en.wikipedia.org_wiki_Cretaceous-25E2-2580-2593Paleogene-5Fextinction-5Fevent&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=5qdCAl1Qt7llqqc91suxqprsn8LP6dXV8Kq08w6Vqo4&e=> (impact winter <https://urldefense.us/v2/url?u=https-3A__en.wikipedia.org_wiki_Impact-5Fwinter&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=oOUvjSK9jq8G-jw5kjaZbrKAzveuchP4-cD4v_j4v4c&e=>), contrary to the widely accepted theory that sulfur aerosols <https://urldefense.us/v2/url?u=https-3A__en.wikipedia.org_wiki_Global-5Fdimming-23Causes&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=G7NCmE7caq-6lv_lcx-ZBpXsCx-ylW4Hh9oL83qHPlc&e=> led to the mass extinction <https://urldefense.us/v2/url?u=https-3A__en.wikipedia.org_wiki_Mass-5Fextinction&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=MjJyo5UADyhKN1NMGvOHWy7VHsS9mHFK9kvHB4MoOI8&e=> . (AFP via RFI) <https://urldefense.us/v2/url?u=https-3A__www.rfi.fr_en_international-2Dnews_20231031-2Dasteroid-2Ddust-2Dcaused-2D15-2Dyear-2Dwinter-2Dthat-2Dkilled-2Ddinosaurs-2Dstudy&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=37TuqNyHuZq6yXfqexNP2Z1VFE4gbUT9fM0p3qv87yw&e=> Nature <https://urldefense.us/v2/url?u=https-3A__www.nature.com_articles_s41561-2D023-2D01290-2D4&d=DwMFAw&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=30XqVZMbMdCMbSoUrfZ5u9X0n05ybYFKUylLDVa3xSQ&m=nP5JkBtXo5nASruqTIqfsck8iHZRcQWCXkePAbj5DtU4vO0s-8PH7BnlkmX3cEo5&s=g6FBiJjDMIbaf1vIhUSILxPaK14JNHAn6HBA_H4FbRs&e=> The referenced paper in *Nature Geoscience* https://www.nature.com/articles/s41561-023-01290-4 has only been in print for 2 days! After doing a completely credible introduction, Ms. Philips brought on this pretty hip physicist, Hakeem Oluseyi ( https://en.wikipedia.org/wiki/Hakeem_Oluseyi) to delve into the details of suspended particulates, radiation balance, and collapse of the food web. She suggested that the *Nature Geoscience* paper seemed applicable to managing climate change, and he riffed on that. All in all, satisfying. And surprising. Robert G Kennedy III PE (K3TVO) -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/9f3e520b-24c7-4967-bb23-84c19fbdd97fn%40googlegroups.com.
