Ellen Clarke, "The Units of Life: Kinds of Individual in Biology" (Oxford UP, 2025)

In Conversation: An OUP Podcast · Feb 10, 2026 · 1h 5m

While we tend to think of biological individuals in terms of paradigmic cases – a dog, a starfish, a bacterium – our ordinary criteria for distinguishing one individual from another are inadequate for making these distinctions in general. If a starfish can literally split itself in two and each half regenerates into a new starfish, why hold that there was just one starfish to begin with rather than many? In The Units of Life: Kinds of Individual in Biology (Oxford UP, 2025), Ellen Clarke defends the idea of evolutionary individuals: units created and maintained by mechanisms that ensure the…