When I was a kid, I could always tell when a TV was on somewhere nearby.  I imagine, in hindsight, that I was hearing very high frequency sounds, but it always seemed like more of something that I just felt.  Admittedly, it felt like a useless superpower that I prided myself on.  My peers couldn't perceive it, but I could.<br><br>That was around 15 years ago now.  That perception of mine hasn't cropped up in some time, and I've recognized for a while that it's due to the fall of the CRT screens.  Can't help but to wonder if I still have said ability, though.<br><br>Not much I can do.  CRTs are few and far between now, and access to a scenario which can properly test my CRT perception 'skill' is fairly limited.