Oil is one of the most important commodities in the world playing an important part in some of the biggest industries like chemicals,transport,power,petrochemicals etc.The high energy density and easy availability have made mankind almost completely dependent on oil for most of his needs.Almost all of the world's cars run on petrol /gasoline which is derived from crude oil.Despite new evidence that burning oil leads to massive pollution and greenhouse warming nothing had been done to prevent its usage growth.In fact each year billions of barrels of oil are burned to power cars,ships,trains etc.Some countries use oil to power electricity as well though that has been decreasing as oil prices have increased substantially in recent years.The massive oil dependency has been decried by politicians for a long time but little has been done to reduce it.Powerful oil lobbies run by massive industrial conglomerates like Exxon,Chevron,BP etc. have managed to kill legislation which would reduce the subsidies to the fossil fuel industry.The BP Oil Spill after creating a massive hue and cry has faded from the public mind and its now business as usual for the Oil Industry.The only way Oil usage can be reduced it seems is when the world runs out of oil and the prices become too high for most people to use it.