I've been reading about these since February. They've been hearing these fairly large explosions - 114 of them. Most have been in the north-east corner of town but not all of them. They haven't done any damage, nobody's been able to pinpoint where they've come from and nobody's found any residue. And they've been looking. They even called Cal Tech in to see if anything has registered on their seismometers and... nothing.http://www.pasadenastarnews.com/odditie ... causing-it
Anybody care to take a stab at it?
My guess, since they aren't all that far from Cal Tech, is maybe something like a story I heard about Nicola Tesla doing some kind of experiment with large amounts of (static?) electricity that he was aiming into the ground and the shock waves just happened to be hitting the rock substrate and bouncing up right under the local police station. Oh, those wacky geniuses! Except I'd think something like that would register on a seismometer. But what would I know? The closest I ever came to going to Cal Tech was driving by it.
Don't look at me, I just work here.