Why am I writing about this? Because of the following sentence, which opens the article (emphasis added):
After the close of the markets Thursday, as the fear of a continued parabolic rise in the price of oil was still fresh on the minds of investors, the U.S. House of Representatives approved a bill that that could help to reverse the direction of oil prices.I don't know, the runup looks linear to me, at least in the short term -- although everything looks linear in the short term. That doesn't mean it hasn't been fast. This is mathification at work.
By the way, The 2006-2008 Oil Bubble and Beyond (D. Sornette, R. Woodard, W.-X. Zhou; arXiv:0806.1170) claim that the growth is actually super-exponential, which they claim is diagnostic of a bubble. (Via the physics arXiv blog.) So "parabolic" may be a massive understatement.