Activity for BobTheAverage‭

Type	On...	Excerpt	Status	Date
Answer	—	A: Can there be a space age without petroleum (crude oil)? Yes but it would be harder. Werrf's answer is correct. You need an abundant and fairly cheap source of energy. Without it technological progress is slow. I think Werrf concentrates too much on replacing coal with other burnable fuels. With modern technology we have replacements for fossil fuel power... (more)	—	over 7 years ago