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for the first time ever scientists have used AI to create new kinds of viruses that have never existed and they work the paper was published in Science today around this model called Evo and it's basically like a ChatGPT but instead of predicting the next word in a sentence it predicts the next letter of DNA they fed it about 9 trillion nucleotides of genetic code from the entire tree of life bacteria plants animals and microbes and then they fine tune it for one specific virus called Phi X 174 which is actually a bacteriophage meaning it's a virus that infects bacteria this one deliberately only infects E. coli and can't infect humans they prompted it to produce its own original versions of that virus's genome and it generated about 700,000 candidate genomes scientists then picked 300 of the most promising designs decided to physically manufacture them by dropping them into bacteria and what they found was 16 of them came to life these ended up becoming real viruses that infected and were able to kill the cells the crazy part is these AI designed viruses didn't just work a few of them actually outperformed the real Phi X 174 and spread and multiply faster than the natural virus so the model wasn't just imitating nature it actually produced new designs that beat the original on at least one measure the good news good news what it could potentially unlock for the field of antibiotics good news bacteriophages are these viruses that kill bacteria and doctors have always wanted to use them to treat infections but bacteria as we know evolves resistance and when that happens viruses often stop working so now you potentially have a way that you can design them faster than bacteria can evolve and this is important especially when drug resistant infections directly kill more than a million people a year now for the less exciting news not so good news... this team deliberately never trained Evo on anything that can potentially infect humans however the ability to write brand new genomes with AI now exists but there are currently very little rules oversight systems or even detection tools built to manage all this big risk is that there's a future version of this that is trained on something that isn't bacteria only that could very possibly design a human pathogen that we've never seen before