There are questions that have been in the minds of humans since we emerged as enquiring beings: are the stars inhabited? Or are we alone in the universe? The guest who will discuss this matter with us is Carlos Briones (Spain), a doctor of science, a specialist in biochemistry and molecular biology and a researcher at the Council of Scientific Research’s Astrobiology Centre in Spain, an organization affiliated with NASA. Briones is the author of the book ¿Estamos solos? En busca de otras vidas en el cosmos, in which he takes up this question from an interdisciplinary viewpoint, looking at the history of how humans have reflected on extraterrestrial life not only from a scientific perspective, but also through art, literature, philosophy, music and science fiction. Briones is a dedicated Third Culture advocate, supporting the integration of the sciences, humanities and the arts. He will talk to Cecilia Barría.