Plumeworld ocean and snowball Earth - PNAS Science Sessions
Description
How Snowball Earth melted
Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us.
In this episode, Shuhai Xiao explores how the Earth emerged from a planetwide glaciation called Snowball Earth.
In this episode, we cover: •[00:00 ] Introduction •[00:48 ] Geobiologist Shuhai Xiao introduces us to Snowball Earth. •[01:58 ] Xiao introduces the “plumeworld” hypothesis that describes the end of Snowball Earth. •[03:41 ] He explains how lithium isotopes in rocks can confirm the plumeworld hypothesis. •[05:54 ] Xiao explains why dolostone deposits in China were suitable for studying this hypothesis. •[06:53 ] He talks about the results of the study. •[07:39 ] He talks about the implications of the study results. •[08:26 ] Caveats and limitations of the study. •[10:06 ] Conclusion.
About Our Guests:
Shuhai Xiao Professor Virginia Tech
View related content here: https://www.pnas.org/doi/full/10.1073/pnas.2407419121
Follow us on Spotify, Apple Podcasts, YouTube, or wherever you get your podcasts for more captivating discussions on scientific breakthroughs!
Visit Science Sessions on PNAS.org: https://www.pnas.org/about/science-sessions-podcast
Follow PNAS: Twitter/X Facebook LinkedIn YouTube Sign up for the PNAS Highlights newsletter
United States
