In 2016, the Artificial Intelligence programme AlphaGo, having learnt and developed its own strategies for playing the board game "Go", defeated one of the top Go players in the world in a highly publicized match. The programme was developed by Google's Deep Mind AI laboratory, where Slovak scientist Michal Valko now works in Paris. Jonathan speaks with Michal about AlphaGo and its successor programmes, in which Michal has been able to pursue his goal of developing AI software which is able to learn more and more on its own, with less and less human intervention. Although there is a large consensus among climate scientists that C02 emissions are a significant factor in the earth's current warming cycle, not all scientists agree. Jonathan asks Alexander Ač, a scientist who takes the consensus view, why he thinks it is that a considerable number of highly qualified climate scientists continue to dispute it.