The extraction and transport of oil from near and off shore wells has been and will continue to be an environmental risk. Frequent small oil spills, urban run-off and naturally occurring oil seeps introduce oil into the ocean every day, however the Deepwater Horizon event during 2010 released unprecedented amounts of oil and chemical dispersants into the Gulf of Mexico. Scientists are still trying to assess the magnitude and impact of the event. Below are several links to information and activities about oil, the extraction of oil, oil spills and the impact on the environment.