science.sciencemag.org/content/365/64… Happy to finally share this project. Oxygen isotopes in marine iron oxides suggest an 18O-depleted early ocean.

A mass extinction around 2.05 billion years ago, which wiped out more than 80% of life, has been discovered by geologists Peter Crockford a Postdoctoral Fellow of @weizmannscience and Princeton University and Malcom Hodgskiss of Stanford University. dailym.ai/2ltJ8X1

New Paper! Large Mass-Independent Oxygen Isotope Fractionations in Mid-Proterozoic Sediments: Evidence for a Low-Oxygen Atmosphere? | Astrobiology liebertpub.com/doi/10.1089/as…

Celebrating a paper acceptance by Soil Biology & Biochemistry. Excited to share our results showing soil microbial responses to fire disturbance with depth!

I'm happy to finally be able to share this one. If you've ever wondered about Barium isotopes, look no further! Barium Isotopes: Drivers, Dependencies, and Distributions through Space and Time cup.org/3m5Si7d

Excited to finally share our work on ironstones as a proxy for O2 levels, w/ Changle Wang, Chris Reinhard, Dan Asael, Dr. Devon Cole, Galen Halverson, @SusaPorter, Nir Galili, Itay Halevy, Rob Rainbird, Tim Lyons & Noah Planavsky 1/4 Photo: Dr. Devon Cole doi.org/10.1073/pnas.2…

Here is a short piece I wrote on some recent research led by myself and in collaboration with colleagues Weizmann Institute Itay Halevy Milo Lab @WIS Yinon Bar-On and Luce Ward at Smith. Enjoy! How much life has ever existed on Earth? theconversation.com/how-much-life-… via The Conversation Canada