Google DeepMind has launched an AI-powered database that maps the potential biological effects of about 9 billion possible single-letter changes in human DNA, giving scientists a new way to sift through genetic variations at a scale that would be difficult to study experimentally one by one.The company describes the Atlas as its most comprehensive catalogue yet of the predicted molecular effects of genetic variants. Rather than testing every possible DNA change in a laboratory, researchers can use the database to identify variants that appear most likely to have a biological effect and then focus experiments on those candidates. Do you think that DNA changes are real?

