remember this too
Who says when oil runs out and global warming seriously kicks in that there will still be billions of people? There won't!
Provided that the population keeps above a certain critical mass advanced technology including nuclear power and steel-making may remain. With the oceans denuded of life scientists will be searching for a process to make a synthetic whale. Oil!
The supra-hot countries such as Russia, Siberia, Alaska, Yukon, Canada and the Maritimes will form a Confederation of Independent States (CIS).
In the frozen wastes of Africa they will just about get one VOR working by robbing parts from the NDB.
In Oz they'll blame the cold weather on the lack of Japanese tourists.
But for those still around, there will be masses of oil. At least 20 litres per person, maybe more.
One day two brothers, blacksmiths in the frozen tundra of Texas, wondering where the birds bo in winter and why they always are boeing north will invent the bicycle. Their names will be "Oh" and "U-U". Yes. Wright Oh and Wright Dubbya.
Unfortunately the chain rusts and they get arrested for riding their bicycle without a light. With them, for a brief moment the flame of invention flickers and goes out. Ten minutes later the cat goes out.
Man is now completely alone in the dark. You're only ever interested in one thing says Eve. Thinking as always as she masticates seal-hide of a nice new pair of Chew shoes.