I'm keeping one eye on the oil and gas industry because I really really want to see the world one day, and I'm worried air tickets will skyrocket if we reach the end of cheap oil in the next few years.
It's already more expensive than it was a decade ago. Although you can still get some good specials.
But, I know one of the major costs of flying is the fuel, so gas prices affect plane ticket prices like nothing else.
I know it affects a bunch of other things as well, and I feel kind of selfish about the polluting effects too.
But, I really want to see Europe one day. I hope I manage to scrape together the cash before it's too late!