Evidence: The Miller-Urey Experiment

One of the key pieces of evidence for the abiogenesis theory is the Miller-Urey experiment, conducted in 1953 by Stanley Miller and Harold Urey. They attempted to simulate the conditions of the early Earth and showed that by sparking an electric discharge through a mixture of gases that resemble the primitive Earth’s atmosphere (methane, ammonia, and water vapor) it was possible to produce some of the building blocks of life, such as amino acids, the building blocks of proteins, and nucleotides, the building blocks of DNA and RNA.