Oil spill

In our daily activity,there are many activities that bring advantage to us but bring harmful to our earth.One of the activity is oil spill..An oil spill is the release of a liquid petroleum hydrocarbon into the environment due to human activity, and is a form of pollution. The term often refers to marine oil spills, where oil is released into the ocean or coastal waters. The oil may be a variety of materials, including crude oil, refined petroleum products (such as gasoline or diesel fuel) or by-products, ships' bunkers, oily refuse or oil mixed in waste. Spills take months or even years to clean up.Oil is also released into the environment from natural geologic seeps on the sea floor.Most human-made oil pollution comes from land-based activity, but public attention and regulation has tended to focus most sharply on seagoing oil tankers. Many method has been done to prevent oil spill.One of the method is secondary containment.This method is to prevent releases of oil or hydrocarbons into environment.Another famous program is Oil Spill Prevention Containment and Countermeasures (SPCC) program by the United States Environmental Protection Agency to prevent oil spill..


for urther information,you can go to http://en.wikipedia.org/wiki/Oil_spill