Nels and Vincent wrap up 2020 with a discussion of novel variants of SARS-CoV-2 that have emerged in the United Kingdom and South Africa, how to interpret the rapidly emerging genome sequence data and what to look for in the coming weeks as these variants spread across the globe.
David Quammen joins Nels and Vincent to talk about his new book, A Tangled Tree, including evolutionary trees, Carl Woese, Lynn Margulis, horizontal gene transfer, and much more.