It's been an exciting week for molecular biologists, and should have been for everyone else too! This week, the Encyclopaedia of DNA Elements programme has revealed its first results about the role of the 99% of the human genome that has, until now, represented a fairly sizeable gap in our understanding of how DNA works. This has made big waves in biological circles and has to some extent penetrated the mainstream media,on the BBC for example, but I thought I'd herald this great work by giving you a brief explanation of what DNA is, how it works, and why so much of it was a bit of mystery until now.
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