Life Possible In Mars' Past

A new discovery appears to hint that Mars may have once had the right conditions for life.  Scientists have already found evidence that rivers once flowed on the Red Planet, but a new study notes that boron has also been found.  That's important because scientists believe the element could be an important ingredient in ribonucleic acid, a vital building block in life as we know it.  Given the right set of circumstances, it could be a sign that life could have existed on Mars.  The boron was discovered by the NASA Curiosity rover.  

The study is published in "Geophysical Research Letters."

Photo: AOL


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