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How Many Species Call Planet Earth Home?

This is a question that has not been answered, and it may never be known. There are estimates of the total number of species that reach as high as 100 million. What biologists do know is there are a lot more species we do not know about than the ones we have found and named. So far scientists have only discovered and named around two million species. This is why there are so many scientists exploring our world looking for undiscovered life.

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What's in a Name?

You may not know it, but all living species have only one scientific name. That's right, only one name. You might hear a plant or animal called many things depending on where a person lives and the language they speak, but only one name is used by scientists.