Repeat show: So-called 'filter bubbles' have become a major source of concern in cyberspace, particularly on social networking platforms which are incentivised to show you content that you will like or agree with, thus keeping you engaged and increasing their advertising revenues – while at the same time, however, preventing you from seeing content that might challenge your current views. With Artificial Intelligence algorithms playing a major role in this, Jonathan caught up with AI expert Robert Moro of the Kempelen Institute of Intelligent Technologies, who researches filter bubbles, to get a better understanding of these new technologies and what impact they're having on society. The existence of species of bacteria on earth that are nearly impossible to kill have suggested to scientists that there may be similar forms of life present in the extremely harsh environments of nearby planets like Mars. Jonathan speaks with astrobiologist Tomáš Paulech of the Astronomical and Geophysical Observatory in Modra.