Nick Lane – Life as we know it is chemically inevitable
10/10/20251 hr 20 min
Nick Lane has some pretty wild ideas about the evolution of life.
He thinks early life was continuous with the spontaneous chemistry of undersea hydrothermal vents.
Nick’s story may be wrong, but I find it remarkable that with just that starting point, you can explain so much about why life is the way that it is — the things you’re supposed to just take as givens in biology class:
* Why are there two sexes? Why sex at all?
* Why are bacteria so simple despite being around for 4 billion years? Why is there so much shared structure between all eukaryotic cells despite the enormous morphological variety between animals, plants, fungi, and protists?
* Why did the endosymbiosis event that led to eukaryotes happen only once, and in the particular way that it did?
* Why is all life powered by proton gradients? Why does all life on Earth share not only the Krebs Cycle, but even the intermediate molecules like Acetyl-CoA?
His theory implies that early life is almost chemically inevitable (potentially blooming on hundreds of millions of planets in the Milky Way alone), and that the real bottleneck is the complex eukaryotic cell.
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Timestamps
(00:00:00) – The singularity that unlocked complex life
(00:08:26) – Early life continuous with Earth's geochemistry
(00:23:36) – Eukaryotes are the great filter for intelligent life
(00:42:16) – Mitochondria are the reason we have sex
(01:08:12) – Are bioelectric fields linked to consciousness?
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Transcript preview
First 90 secondsDwarkesh Patel· Host0:00
Today, I'm chatting with Nick Lane, who is an evolutionary biochemist at University College London. And he has many books and papers which help us reconceptualize life's 4 billion years in terms of energy flow, and helps explain everything from how life came to be in the first place, to the origin of eukaryotes, to many, uh, contingencies we see today in how life works. So, Nick, maybe a good place to start would be, why are eukaryotes so significant in your worldview of why life is the way it is?
Nick Lane· Guest0:30
Well, first, thanks for having me here. (laughs) This is- this is fun. Uh, I- I love talking about this kind of thing. So- so eukaryotes, what's a eukaryote? It's basically the cells that make us up, but also make up plants and make up things like amoeba or fungi, algae. So basically, everything that's large and complex that you can see is composed of this one cell type called the eukaryotic cell. And we have a nucleus where all the DNA is, where all the genes are, and then a- all this kind of machinery, cell membranes and things. There's just basically a lot of kit in- in- in these cells. And the weirdness is if you look inside a plant cell or a fungal cell, it looks exactly the same under an electron microscope as one of our cells, but they have a completely different lifestyle. So why would they have all the same kit if they evolved to be a single-celled alga living in an ocean, doing photosynthesis? It's still got the same kit that our cells have. So, we know that because they share all of these things, they arose once in the whole history of life on Earth. There could have been multiple origins, but there's no evidence for that, that, you know, if there was, it disappeared