Waterloo Cedar Falls Courier | Slip-sliding: Oil could drop to $30 a barrel by end of year Waterloo Cedar Falls Courier Oil is slippery for a reason. It jumps and plummets. It just doesn't stay still for long. Once in awhile, the price of oil seems to go up and down almost simultaneously, as it did in 2008. That's when the price of crude oil hit its all-time high of ... |