Re: microwaves:
I'm sure they can be dangerous but I doubt they could hurt anyone in the quantities you find in a household model. My parents had the same microwave since before I was born (they got rid of it shortly before I moved away a few years ago) that was so worn out that every time it was used it LEAKED RADIATION INTO THE HOUSE SUFFICIENT ENOUGH TO CUT OFF EVERY WIRELESS SIGNAL IN IT. Wi-fi, radios, cell phones, cordless phones, even walkie-talkies. If that microwave was going, you couldn't use a single one of those on the ground floor if not the entire house. Sometimes you could in the concrete-lined basement, but for the most part the microwave killed all the wireless signals. I lived with that microwave for twenty years and, as you can probably tell, I am not dead and also I'm pretty sure I don't have cancer or extra eyes or limbs.
I still can't imagine it was especially healthy, though. Just sayin'.