))
When did rats come to the Americas, and was Lucy really our direct ancestor?
Manage episode 410677933 series 3452338
Innehåll tillhandahållet av Science Podcast and Science Magazine. Allt poddinnehåll inklusive avsnitt, grafik och podcastbeskrivningar laddas upp och tillhandahålls direkt av Science Podcast and Science Magazine eller deras podcastplattformspartner. Om du tror att någon använder ditt upphovsrättsskyddade verk utan din tillåtelse kan du följa processen som beskrivs här https://sv.player.fm/legal.
Tracing the arrival of rats using bones, isotopes, and a few shipwrecks; and what scientists have learned in 50 years about our famous ancestor Lucy
First on the show: Did rats come over with Christopher Columbus? It turns out, European colonists weren’t alone on their ships when they came to the Americas—they also brought black and brown rats to uninfested shores. Eric Guiry, a researcher in the Trent Environmental Archaeology Lab at Trent University, joins host Sarah Crespi to discuss how tiny slices of bone from early colony sites and sunken shipwrecks can tell us when these pesky rodents arrived.
Next, producer Meagan Cantwell talks with Contributing Correspondent Ann Gibbons about what has happened in the 50 years since anthropologists found Lucy—a likely human ancestor that lived 2.9 million to 3.3 million years ago. Although still likely part of our family tree, her place as a direct ancestor is in question. And over the years, her past has become less lonesome as it has become populated with other contemporaneous hominins.
This week’s episode was produced with help from Podigy.
Authors: Sarah Crespi; Meagan Cantwell; Ann Gibbons
LINKS FOR MP3 META
Episode page: https://www.science.org/doi/10.1126/science.z4scrgk
About the Science Podcast: https://www.science.org/content/page/about-science-podcast
Learn more about your ad choices. Visit megaphone.fm/adchoices
538 episoder
Dela
