Ancient trees show turning point in Earth history 42,000yr ago.

The temporary breakdown of Earth’s magnetic field 42,000 years ago sparked major climate shifts that led to environmental change and mass extinctions, a new international study co-led by UNSW Sydney shows. Stephen Fry narrated explainer: /watch/YQsG3eLd1sQdG Link to the paper: https://science.sciencemag.org/cgi/doi/10.1126/science.abb8677 UNSW Newsroom article: https://newsroom.unsw.edu.au/news/science-tech/ancient-relic-points-turning-point-earths-history-42000-years-ago The Conversation article: https://theconversation.com/earths-magnetic-field-broke-down-42-000-years-ago-and-caused-massive-sudden-climate-change-155580 For more videos like this subscribe to our channel: /user/unsw UNSW Sydney is one of Australia's leading research and teaching universities. We're a welcoming community, promoting lasting knowledge and creating an academic environment where outstanding students and scholars from around the world can be inspired to excel in their programs of study and research.

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