Selva Brasilis

Um país que evoluiu da oca e senzala ao abismo, barbárie e caos, sem ter experimentado a civilização

Monday, December 13, 2010

Regresso Científico

A Scientific American lista alguns casos de regresso científico, como este: The origin of life: In 1953 Harold Urey of the University of Chicago and his graduate student Stanley Miller simulated the "primordial soup" in which life supposedly began on Earth some four billion years ago. They filled a flask with methane, ammonia and hydrogen (representing the primordial atmosphere) and water (the oceans) and zapped it with a spark-discharge device (lightning). The flask was soon coated with a reddish goo containing amino acids, the building blocks of proteins. This famous experiment raised the hopes of many scientists that one of nature's deepest mysteries—genesis, the origin of life on Earth—would soon be replicated in the laboratory and hence solved. It hasn't worked out that way. Scientists have failed to show how mere chemicals can become animate, and the origin of life now appears more improbable and mysterious than ever.
SELVA BRASILIS at 4:26 PM
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