"A small number of researchers are making real progress trying to create computers out of living cells," reports the BBC:

Among those leading the way are a group of scientists in Switzerland, who I went to meet. One day, they hope we could see data centres full of "living" servers which replicate aspects of how artificial intelligence (AI) learns — and could use a fraction of the energy of current methods.

That is the vision of Dr Fred Jordan, co-founder of the FinalSpark lab I visited. We are all used to the ideas of hardware and software in the computers we currently use. The somewhat eyebrow-raising term Dr Jordan and others in the field use to refer to what they are creating is "wetware". In simple terms, it involves creating neurons which are developed into clusters called organoids, which in turn can be attached to electrodes — at which point the process of trying to use them like mini-computers can begin...

For FinalSpark, the process begins with stem cells derived from human skin cells, which they buy from a clinic in Japan. The actual donors are anonymous... In the lab, FinalSpark's cellular biologist Dr Flora Brozzi handed me a dish containing several small white orbs. Each little sphere is essentially a tiny, lab-grown mini-brain, made out of living stem cells which have been cultured to become clusters of neurons and supporting cells — these are the "organoids"... After undergoing a process which can last several months, the organoids are ready to be attached to an electrode and then prompted to respond to simple keyboard commands... Electrical stimulations are important first steps towards the team's bigger goal of triggering learning in the biocomputer's neurons so they can eventually adapt to perform tasks...

FinalSpark are not the only scientists working in the biocomputing space. Australian firm Cortical Labs announced in 2022 that it had managed to get artificial neurons to play the early computer game Pong. In the US, researchers at Johns Hopkins University are also building "mini-brains" to study how they process information — but in the context of drug development for neurological conditions like Alzheimer's and autism.
Thanks to long-time Slashdot reader fjo3 for sharing the news.

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