What the oil price drop means for you
The price of oil has been sinking from $115 per barrel in June 2014 to less than $51 (£33) this week.
Lower prices are good news for consumers but bad news for those who produce and sell it.
Scotland does both and the North Sea oil industry is particularly vulnerable to a crash in prices.
BBC Scotland's business and economy editor Douglas Fraser has been looking at the numbers.
07 Jan 2015