Top stories: The origin of life, the galaxy’s oldest solar system, and interspecies interbreeding

The earliest life on Earth encountered a paradox: Why would RNA chains get longer and longer, setting the stage for the evolution of complex life forms like amoebas, worms, and eventually humans, if shorter RNA molecules reproduced faster? Now, new research suggests that longer RNA chains could….

Posted: 2015-01-30 22:10:00

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