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The burial dating relies on measuring radioactive isotopes aluminum-26 and beryllium-10 in quartz within the rock.

These isotopes are only created when the rock is exposed to cosmic rays.

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When it is buried or deposited in a cave, the isotopes decay at known rates.

The new date places Little Foot as an older relative of Lucy, a famous Australopithecus skeleton dated at 3.2 million years old that was found in Ethiopia.

It is thought that Australopithecus is an evolutionary ancestor to humans that lived between 2 million and 4 million years ago.

And, women are definitely guilty of sending the "hey" message to men and women, too, but the end results typically don't follow the same pattern as what you'll see below.

You may now see our list and photos of women who are in your area and meet your preferences.

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