Michael Levin: Biology, Life, Aliens, Evolution, Embryogenesis & Xenobots | Lex Fridman Podcast #325

The African clawed frog, the common model organism from which the skin cells used to create xenobots are derived. It's convenient for developmental biology research due to its prolific egg-laying and external development.

A common oncogenic (cancer-causing) gene mutation. Michael Levin's research suggests that even with k-RAS mutations, cells can be prevented from forming tumors by controlling their bioelectric state and connectivity.

A fundamental logic gate that can be used to build any other logic function, mentioned as an example of free gifts from physics that evolution doesn't need to 'evolve from scratch'.

A term describing the idea that biological systems often work towards a specific anatomical goal in morphospace, acting as a navigation task, rather than just emergent feed-forward processes.

Proteins in cell membranes that act like transistors, allowing charged molecules to move in and out, creating voltage gradients. They are crucial for bioelectrical networks and predate neurons.

Proteins that form channels between adjacent cells, allowing ions and small molecules to pass directly. They are crucial for communication in electrical networks and can 'wipe ownership metadata' on signals, contributing to emergent collective cognition.

The self-creation and self-maintenance of a system, particularly in biology, where organisms actively construct their own boundaries and identity from scratch.

Andrej Karpathy's term for a new programming paradigm where systems are configured using machine learning, particularly artificial neural networks, by adjusting hyperparameters rather than writing explicit code.

A nematode (roundworm) model organism where every cell is 'numbered' and has a fixed developmental fate, contrasting with the high plasticity found in most other organisms.

An aggressive type of brain cancer. Michael Levin's lab is applying their bioelectric control methods to human glioblastoma cells with the hope of future patient interaction.

The theoretical idea of machines that can build copies of themselves from raw materials, which xenobots have been shown to implement kinematically.

A proposed future medical approach that treats internal diseases by understanding and reprogramming the 'intelligence' and goal states of the body's somatic cells and tissues, rather than micromanaging at the chemical level.

A theoretical framework suggesting that biological systems minimize 'surprise' or prediction error in their interactions with the environment, acting as a fundamental guide for intelligent behavior.

An immortal cell line derived from Henrietta Lacks' cervical cancer cells, used extensively in scientific research. Mentioned to illustrate how cells can have a 'life' beyond the death of the organism they came from.

A neurodegenerative disease, mentioned in the context of regenerative medicine, where stem cell transplants could potentially generate specific types of neurons to treat such conditions.

A cancer treatment method that uses drugs to kill cancer cells, often by hoping to kill more tumor cells than healthy cells, leading to significant side effects due to similar cell properties.

A flatworm known for its immortality and regenerative capabilities, capable of regrowing a new brain that retains learned information even after decapitation. Its genome is often mixoploid due to constant regeneration.

Materials that possess a degree of agency, meaning they have preferences, goals, memories, and the ability to anticipate, requiring engineers to collaborate with them rather than simply control them.

The electrical phenomena in living cells, where voltage gradients across membranes and communication via gap junctions form computational networks. These networks are crucial for cellular memory, pattern formation, and overall tissue cognition.

A wearable device developed by David Kaplan's lab at Tufts, designed as a controlled environment to deliver specific drugs (like ion channel drugs) to cellular injury sites to promote limb regeneration in frogs.

A cancer treatment that uses the body's own immune system to fight cancer cells.

A world-class AI researcher who first introduced Lex Fridman to Michael Levin's work, highlighting the intersection of biology and AI.

The scientist who rediscovered gap junctions and was writing a book on their connection to consciousness, highlighting their role in the emergence of collective mind.

A prominent philosopher and psychologist who defined intelligence as 'the ability to get to the same goal by different means,' a concept that applies well to biological systems' plasticity.

Co-author with Michael Levin of a paper on behaviorist approaches to synthetic organisms, focusing on how to determine the psychology and capabilities of an unknown system through empirical protocols.

A renowned naturalist who proposed the theory of evolution by natural selection. His quote from 'On the Origin of Species' concludes the podcast, emphasizing the grandeur of life's evolution.

A computer scientist at the University of Vermont who collaborates with Michael Levin's lab, using simulated evolution to manipulate cellular behavior in xenobots.

A Nobel Prize-winning geneticist famous for his work with fruit flies, who also conducted experiments on planarian regeneration, notably cutting them into over 200 pieces, each regenerating a full worm.

The source of the HeLa cell line, whose cells are still alive and propagating today far more than they were during her lifetime.

Biologist and professor at Tufts University, whose lab researches novel ways to understand and control complex pattern formation in biological systems. He is the guest on the podcast.

A river mentioned metaphorically as a place where genetically identical two-headed planaria could be released, illustrating how environmental factors can lead to 'speciation events' without genomic changes.

An AI program that predicts protein structures from their amino acid sequences, mentioned as a solved problem in biology that still faces challenges in reverse engineering (designing sequences for desired shapes).

Self-assembling proto-organisms and biological robots created from frog skin cells that exhibit novel behaviors like kinematic self-replication and navigation. They reveal the inherent plasticity of biological materials.

A material used within the wearable bioreactor to carry therapeutic drugs for limb regeneration.

The academic institution where Michael Levin and his lab conduct research on biological systems.

The academic institution where Josh Bongard's group, computer scientists specializing in AI, collaborates with Michael Levin's lab on xenobot research.

An AI image generation software that creates visuals from text prompts, used as an analogy for an 'anatomical compiler' that could generate biological designs from high-level descriptions.

A theoretical model of computation where the output is determined by the input and internal states, used to describe the feed-forward emergent behavior of cells.

A scientific journal where a paper co-authored by Michael Levin, discussing the concept of 'agential materials' and building with biological components like dogs instead of Legos, was accepted.

Charles Darwin's seminal work on evolutionary theory, from which a final quote about the grandeur of life and its evolution is read.