Big Biology

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What are eco‑evolutionary dynamics and how can we study them in the wild? Why do some fish evolve placentas?
In this episode, we talk with David Reznick, Distinguished Professor of Biology at the University of California, Riverside. David has spent much of his career studying Trinidadian guppies to understand adaptation in the wild. In our conversation, …

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How are camera traps used in the conservation of cryptic species such as the African golden cat? How can local communities be engaged to foster the success of conservation?
In this episode, we talk with Mwezi Mugerwa, winner of the 2025 Indianapolis Prize Emerging Conservationist, a National Geographic Explorer, and President of the Society for Conservat…

How did life originate on Earth? Why is it that eukaryotes but not bacteria or archaea evolved large size and complicated body forms? How likely is that life has arisen independently elsewhere in the universe?
On this episode, we talk with Nick Lane, a biochemist and professor at University College London, about his 2015 book The Vital Question. Nick argues that protolife arose in alkaline hydrothermal vents deep in the early Earth’s oceans. The key early event was the evolution of metabolism powered by proton gradients. In other words, metabolism came first, and all of the rest of traits we think of as universal to life -- DNA, RNA, proteins, transcription, and translation -- came later. He also invokes an energetic perspective on the origin of eukaryotes, arguing that the acquisition of mitochondria distributed energy production through the cell volume, provided vastly more energy per gene, and allowed the dramatic expansion of eukaryotic genomes that in turn support the astonishing diversity of eukaryotic forms we see today.
This episode was originally aired in October 2020.


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How and when did humans domesticate the horse? How did horses shape our language, culture, and history?
On this episode, we talk with Dr. Ludovic Orlando, a research director for the French National Center for Scientific Research and founding director of the Centre for Anthropobiology & Genomics of Toulouse. Ludovic is also the author of the new book Hor…

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How do animals use medication and can humans learn from them? What are the evolutionary consequences of animal self-medication?
In this episode, we talk with Jaap de Roode, the Samuel Candler Dobbs Professor of Biology at Emory University and author of the book Doctors by Nature: How Ants, Apes, and Other Animals Heal Themselves. Jaap’s research on monar…