Study Estimates 8.7 Million Species on Earth

August 24, 2011 Updated Aug 24, 2011 at 2:05 PM EDT

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Study Estimates 8.7 Million Species on Earth

August 24, 2011 Updated Aug 24, 2011 at 2:05 PM EDT

A group of researchers estimate the number of species on earth at 8.7 million according to a study published Tuesday in the online journal PLoS Biology, the BBC reports.

About 1.2 million species have currently been identified.

Read the BBC story here.