scientists and Nobel Prize laureates attended Starmus IV and gave presentations on a variety of topics. Michel Mayor discussed exoplanets and exoEarths, Sara Seager raised the issue of biosignatures on exoplanets, Lynn Rothschild continued the topic by exploring the most extreme environments where alien life could be found. George Smoot made a presentation on cosmic connection, Adam Riess discussed evidence on the acceleration of the Universe from observing supernovae, physicist and mathematician Brian Greene talked about String Theory and the fabric of spacetime, Martin Rees’ talk dwelt upon the future of the Earth, Priyamvada Natarajan gave a presentation on the dark side of the Universe, and Jill Tarter spoke about technology and its resemblance to magic – or nature. Physicist and director of Max Planck Institute Stefan Hell’s talk was dedicated to the revolutionary changes in optical microscopy, Stephen Hawking offered an exploration of the future of the humanity (he gave his talk via VoIP connection, as he had not been able to attend the festival due to health issues) and Lisa Randall spoke about dark matter and the dinosaurs, while physicist and programmer Jaan Tallinn highlighted issues of steering artificial intelligence. Apart from outstanding physicists and astronomers, Starmus IV hosted biologists Nancy Knowlton, with a talk on the life on Planet Ocean, and Paul Hebert, with a discussion of a mission on planetary diversity, climate change scientist Katharine Hayhoe who explored the facts and myths of climate change, microbiologist and biochemist Emmanuelle Charpentier who talked about CRISPR-Cas9, a gene editing technology that revolutionises life sciences, biochemist and writer Nick Lane who offered insights into understanding the planetary life support systems, psychologist and neuroscientist Edvard Moser who gave a talk on the brain’s positioning system, physiologist Susumu Tonegawa who unveiled the mechanisms of the human memory, economists Chris Pissarides, with a presentation on work in the age of robots, Finn Kydland, with a talk on innovation, capital formation and economic policy, and Jeffrey Sachs, who gave a talk called How we can survive Trump, Climate Change and other Global Crises? A number of concerts and performances were given at Starmus IV by outstanding musicians and artists. Steve Vai shared his creative manifestation, and David Zambuka made an impressive show entitled "Get a Life (form)!" May-Britt Moser and Trondheim Soloists offered an art-science project called Into Whiteness. The Trondheim Symphonic Orchestra gave a number of concerts with Ane Brun, Steve Vai