Life-From-Space Theory Gets Unexpected Boost. Lefties are just 11 percent of the world population.
But take a close look at anyone's amino acids, which are protein's and thus life's tiny building blocks, and left-handers rule. Left-handed amino acids are mirror images of their right-handed buddies, and though similar, the mirrored molecules are chemically different. For some reason, nearly every single organism exclusively relies on lefties. Why does life discriminate on a molecular level? The Miller/Urey Experiment. By the 1950s, scientists were in hot pursuit of the origin of life.
Around the world, the scientific community was examining what kind of environment would be needed to allow life to begin. In 1953, Stanley L. Miller and Harold C. The Miller-Urey experiment. Charles Darwin recognised that a basic problem of his theory of evolution was to produce life itself.
In a letter to Joseph Hooker in 1871, he wrote: … if (and oh! What a big if!) We could conceive [of] some warm little pond, with all sorts of ammonia and phosphoric salts, light, heat, electricity etc. present, that a protein compound was chemically formed ready to undergo still more complex changes, at the present day such matter would be instantly absorbed, which would not have been the case before living creatures were found. 1953 was a landmark year for scientists researching an evolutionary explanation for the appearance of life. Miller-Urey Experiment - Amino Acids & Origins of Life on Earth. The Miller-Urey Experiment The Miller-Urey experiment was an experiment that simulated hypothetical conditions present on the early Earth in order to test what kind of environment would be needed to allow life to begin.
The experiment is considered to be the classic experiment on the origin of life. It was conducted in 1953 by Stanley L.