How did life begin?Four billion years ago, something started stirring in the primordial soup. A few simple chemicals got together and made biology – the first molecules capable of replicating themselves appeared. We humans are linked by evolution to those early biological molecules. But how did the basic chemicals present on early Earth spontaneously arrange themselves intosomething resembling life? How did we get DNA? What did the first cells looklike? More than half a century afterthe chemist Stanley Miller proposed his primordial soup theory, we still cant agree about what happened. Somesay life began in hot pools near volcanoes, others that it was kick-started by meteorites hitting the sea.
Posted on: Fri, 04 Jul 2014 06:58:24 +0000
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