A note from Daniel

Life would be impossible without the carbon atom. Most astrobiologists scientists who study the possibility of life elsewhere in the universe believe that if we are ever to discover convincing evidence of extraterrestrial life, be it on Mars or in some distant galaxy, it, too, will turn out to be carbon-based. Why are we so confident about carbon's essential role in creating living things? The answer has to do with the core properties of the carbon atom itself. Carbon has four valence electrons residing in the outermost shell of the atom, which, for complicated reasons, makes it uniquely talented at forming connections with other atoms, particularly with hydrogen, nitrogen, oxygen, phosphorus, sulfur and, crucially, with other carbon atoms.

Daniel Where Good Ideas Come From, page 47 · February 15, 2024 Save to shelf
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