For a site called 3quarksdaily it would be remiss not to mention that quarks look more and more like they are composed, as is everything else, of strings. It is all strings baby. The five (maybe six) versions of string theory continue to look more and more like arms of a single unified theory of everthing. Right now people are calling it M-Theory. ‘M’ for mysterious maybe. Anyway it is amazing stuff. Brian Greene’s book, The Elegant Universe is a very very worthwhile read especially for those who can’t browse through Witten’s latest paper or follow the more insane permutations of Calabi-Yau mathematics. This is cutting edge mind-blowing science.