Researchers debate whether an ancient fossil is the oldest animal yet discovered, and a new way to eavesdrop on glaciers. ﻿In this episode:01:04 Early spongeThis week in Nature, a researcher claims to have found a fossil sponge from 890-million-years-ago. If confirmed, this would be more than 300-million-years older than the earliest uncontested animal fossils but not all palaeontologists are convinced. Research Article: <a href="https://www.nature.com/articles/s41586-021-03773-z?utm_source=naturepod&amp;utm_medium=podcast&amp;utm_campaign=shownotes" rel="noopener noreferrer" target="_blank">Turner</a> 10:13 Research HighlightsA caffeine buzz appears to improve bees’ memory, and reconstructing an Iron Age man’s final meal. Research Highlight: <a href="https://www.nature.com/articles/d41586-021-02072-x?utm_source=naturepod&amp;utm_medium=podcast&amp;utm_campaign=shownotes" rel="noopener noreferrer" target="_blank">A caffeine buzz gives bees flower power</a>Research Highlight: <a href="https://www.nature.com/articles/d41586-021-01984-y?utm_source=naturepod&amp;utm_medium=podcast&amp;utm_campaign=shownotes" rel="noopener noreferrer" target="_blank">The guts of a ‘bog body’ reveal sacrificed man’s final meal</a> 12:34 Eavesdropping on a glacier’s baseWe hear about one researcher’s unorthodox attempt to listen in to the seismic-whisper at the foot of a Greenland glacier – a method that might reveal more about conditions under these enormous blocks of ice. Research Article: <a href="https://www.nature.com/articles/s41467-021-24142-4?utm_source=naturepod&amp;utm_medium=podcast&amp;utm_campaign=shownotes" rel="noopener noreferrer" target="_blank">Podolskiy et al.</a> <a href="https://go.nature.com/get-the-nature-briefing" rel="noopener noreferrer" target="_blank">Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.</a> &#10;&nbsp; <hr>See <a style='color: grey; ' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for privacy and opt-out information.

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Has the world’s oldest known animal been discovered?

Nature Podcast