In natural science, abiogenesis or biopoesis is the study of how life on Earth arose from inanimate matter. Most amino acids, often called "the building blocks of life", can form via natural chemical reactions unrelated to life, as demonstrated in the Millerâ€“Urey experiment and similar experiments, which involved simulating some of the conditions of the early Earth, in a scientific laboratory. In all living things, these amino acids are organized into proteins, and the construction of these proteins is mediated by nucleic acids. Which of these organic molecules first arose and how they formed the first life is the focus of abiogenesis.
First broadcast on 14 November 2006