For all those saying BE+ cardboard is bad.. you do know that cardboard does not combustion till 450f+? if your BE;s get that hot you have bigger things to worry about.
Strictly correct, but its actually 427
Celcius http://www.answerbag.com/q_view/2015404... and all because of a minor error by Ray Bradbury (great writer though)
[FlameBait] Now when are you USians going to join the modern age and start using sensible units? [/FlameBait]
Anybody in science and engineering would like to, but politicians don't want to upset the less intelligent people. Change scares them.