One of the biggest debates in the dinosaur world is what was happening right <a href="https://www.sciencefriday.com/segments/dinosaur-population-asteroid-studies/?utm_source=wnyc&utm_medium=podcast&utm_campaign=scifri" target="_blank">before they went extinct</a>. Were they already declining, or would they have thrived if not for the asteroid? Two recent studies shed some light on this question: one that analyzes a trove of fossils from New Mexico and suggests there was more <a href="https://www.sciencefriday.com/segments/dinosaur-population-asteroid-studies/?utm_source=wnyc&utm_medium=podcast&utm_campaign=scifri" target="_blank">diversity in the Americas </a>than previously thought, and another that reanalyzes a long-debated juvenile T. rex fossil and finds it’s likely a separate, smaller species.Host Ira Flatow is joined by authors on those separate studies, paleontologists Steve Brusatte and Lindsay Zanno.Guests: Dr. Lindsay Zanno is division head of paleontology at the North Carolina Museum of Natural Sciences in Raleigh, NC.Dr. Steve Brusatte is a paleontologist at the University of Edinburgh in Scotland.Transcripts for each episode are available within 1-3 days at <a href="https://www.sciencefriday.com/segments/dinosaur-population-asteroid-studies/?utm_source=wnyc&utm_medium=podcast&utm_campaign=scifri" target="_blank">sciencefriday.com.</a>
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Were Dinos On Their Way Out Before The Asteroid Hit? Maybe Not

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