I certainly learnt a couple things about general relativity from that article (e.g. the "modern view" (meaning largely, the view from string theory) that "we un

I certainly learnt a couple things about general relativity from that article (e.g. the "modern view" (meaning largely, the view from string theory) that "we understand Einstein's equations just as the equations of an "effective field theory""), although it was way over my head. That blog (Luboš Motl's) has an amazingly large number of long and technical or topical articles on physics. I found this one on Boltzmann and thermodynamics especially insightful and relatively non-technical: http://motls.blogspot.co.nz/2013/02/ludwig-boltzmann-birthday.html?m=1 http://motls.blogspot.co.nz/2013/02/ludwig-boltzmann-birthda...