Rachel starts us off with a mysterious river of blood in Antarctica. Okay, so not actually blood but what is causing this strange red river to flow out of a glacier on the bottom of the world?

Kirk is up next and he talks us though the de-extinction of the Wooly Mammoth. What is the current state of research and what reasons are both to do it and to avoid it? De-extinction is a complicated and controversial topic. Kirk and Rachel debate the merits.

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