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New Source for Black Gold?
Oil, one of the most important, valuable substances on the planet may form in an unexpected place, according to a new study -- the crushing hot furnace of Earth's mantle.

The petroleum we rely on to fuel our cars and heat our homes were formed over millions of years as ancient, dead algae and plankton were compressed in layers of sediment and heated. Because of this, oil companies know to look for new reserves in places that are, or once were shallow marine environments.

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