How did life begin? Still debating

This short article by John Horgan for Scientific American is the lead-in to some lively responses. While some are complaining Horgan short-changed all the work done on DNA and RNA in the last two decades, he's right in saying there is still (and probably always will be) debate on exactly what happened billions of years ago. The recent trend is to suggest the simpler RNA gave rise to DNA, but it turns out RNA is unlikely to arise by itself either. We come back to this: life is wonderful.