A Neat Comet

Comet C/2001 Q4, also known as NEAT. Its coma, or head, and a portion of its tail are visible in this image taken from Kitt Peak National Observatory near Tucson, Arizona. Those of us who live in the Northern hemisphere have probably forgotten the comet because it was only visible to the naked eye of... Continue Reading →

Changing Ideas About The Origin Of Life

For life to begin---to borrow from Addy Pross' definition---a kinetically stable, self-sustained reaction network is needed, one that is tied into a replication mechanism. When 20th century scientists accepted and elaborated on J.B.S Haldane's primordial soup hypothesis, their guesses and suggestive experiments centered mostly around the mature field of organic chemistry. But biochemistry as a science was still in... Continue Reading →

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