Scientist Susan Crockford has spent decades writing professional papers and books but has been blogging about polar bears for non-scientists since 2012.

Her books include Polar Bear Evolution: A Model for How New Species Arise, The Polar Bear Catastrophe That Never Happened, Sir David Attenborough and the Walrus Deception, Polar Bear Facts & Myths (for kids), and (for fiction lovers) a polar bear attack thriller set in Newfoundland called EATEN.

00:00 Introduction and Guest Presentation
00:32 Recent Developments in Polar Bear Research
01:31 Discrepancies in Polar Bear Population Reports
04:03 The Impact of Climate Change on Polar Bear Populations
05:08 Challenges in Polar Bear Population Management
05:38 Historical Perspective on Polar Bear Populations
08:07 The Politics of Polar Bear Research
10:13 The Role of Indigenous Knowledge in Polar Bear Research
13:46 The Consequences of Speaking Out in Polar Bear Research
23:35 Exploring Polar Bear Evolution
32:56 The Mystery of Animal Transformation
33:22 Debunking Genetic Mutation Theory
34:06 The Role of Thyroid Hormone in Animal Transformation
36:33 Understanding Hormonal Rhythms
38:27 The Hypothesis of Hormonal Selection
39:58 The Theory's Reception and Testability
41:17 Challenges in Measuring Thyroid Hormone
41:39 Potential Testing Methods and Future Research
46:29 Exploring Polar Bear Evolution
01:00:34 The Role of Thyroid Hormone in Species Differentiation
01:03:30 The Process of Animal Domestication
01:07:14 Closing Remarks

https://twitter.com/sjc_pbs
http://polarbearscience.com
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