From David Marjot, Weybridge, Surrey, UK
In NASA’s search for the biosignature of life on other worlds, could artificial intelligence help? When considering life’s chemical origins, two relatively simple structures that appear to have self-replicating properties are prion proteins and types of RNA. For life to get going, these would need suitable substrates on which to develop. We might be guided to even simpler self-replicators and substrates by AI (3 February, p 9).
