So I'm a physics major in my second semester of undergrad physics and have been completely blown away by electricity and magnetism. The stuff just amazes me. So I was wondering what the current hot topics of E&M are. What are the unanswered questions? What kind of things would I be studying/researching if I followed the E&M path? I know this is a pretty broad question but I was wondering what those of you in the field had to say about it. What kind of stuff are you working on? Thanks!