The price of petrol seems to keep changing, but the truth is that the problem isn't just to do with decreasing oil resources. In fact, the price of the black stuff is linked into our economy in a complex way — and this video beautifully describes what's going on for those of us lacking an economics background.
If you've ever thought about economics in much detail: firstly, poor you, and second, this probably won't come as a huge surprise to you. But for the mere mortals amongst us, this video — inspired by Jeremy Rifkin's ideas — goes a long way to explaining why petrol prices vary with the economy's success. [Epipheo]