2008 rules, but I suspect that these should be close enough to use as a common sense guide.
I wasn't about to pay for the 2010 membership just to read that I shouldn't be barefoot....
If the quantity of carbonic acid increases in geometric progression,
the augmentation of the temperature will increase nearly in arithmetic progression.
Svante Arrhenius 1896
Cogito ergo soy (I think, therefore: Biodiesel)