Interesting read.
I once wondered what would be the contribution to atmospheric heat of the combustion of cigarettes, and waved it as probably insignificant.
A quick googling suggests burning a cigarette releases 7.8 J/mg of tobacco[1], that a cigarette weighs around 1 g, and that about 5 trillions (5e12) cigarettes are smoked annually [2].
This amounts to 3.9e16 J, or, averaged over one year, 1.2e9 W; corresponding to the total US energy consumption around 1730, according to the figure in parent's link.
Insignificant today, but not a few centuries back.
Same here. I dropped meat more because of being a "billions of living creatures living miserable, short lives before being slaughtered" anti-fan, but the GHG impacts are a nice side effect. Damn do I miss meat, though.
That would be 49!/(43!6!) = 13983816 combinations. So, on average, you need to play 13983816 times before your first win (geometric distribution). At one game a day, that's nearly 40000 years.