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|    talk.origins    |    Evolution versus creationism (sometimes    |    142,579 messages    |
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|    Message 140,678 of 142,579    |
|    Pro Plyd to All    |
|    New support for Miller-Urey - water drop    |
|    17 Mar 25 21:12:25    |
      From: invalide@invalid.invalid              This is a HUGE shot in the arm for M-U...       and exo biology              https://scitechdaily.com/tiny-sparks-big-discovery-could-water-d       oplets-have-created-life/       MARCH 14, 2025              Life may not have started with a dramatic       lightning bolt striking the ocean. Instead,       tiny “microlightning” sparks generated by       water droplets from crashing waves and       waterfalls may have played a key role.              New research from Stanford University       reveals that when water is sprayed into a       mixture of gases resembling Earth’s early       atmosphere, it can produce organic molecules       containing carbon-nitrogen bonds. These       molecules include uracil, a fundamental       component of DNA and RNA.              Published today (March 14) in Science       Advances, the study provides fresh support       for the long-debated Miller-Urey hypothesis,       which suggests that life began with a       lightning strike. This idea originated from       a 1952 experiment demonstrating that organic       compounds could form when electricity       interacted with water and inorganic gases.              However, the latest findings suggest that       electricity wasn’t necessarily required.       The researchers discovered that water       droplets naturally generate tiny electrical       charges, creating the same organic molecules       without the need for an external energy       source.              “Microelectric discharges between oppositely       charged water microdroplets make all the       organic molecules observed previously in the       Miller-Urey experiment, and we propose that       this is a new mechanism for the prebiotic       synthesis of molecules that constitute the       building blocks of life,” said senior author       Richard Zare, the Marguerite Blake Wilbur       Professor of Natural Science and professor       of chemistry in Stanford’s School of       Humanities and Sciences.       ...       How these biological components came about       has long puzzled scientists, and the       Miller-Urey experiment provided one possible       explanation: that lightning striking into the       ocean and interacting with early planet gases       like methane, ammonia, and hydrogen could       create these organic molecules. Critics of       that theory have pointed out that lightning is       too infrequent and the ocean too large and       dispersed for this to be a realistic cause.       ...              --- SoupGate-DOS v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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