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Read articles, including Science News stories written for ages 9-14, on the SNK website.
WHERE'S WATER?

In an escarpment (left images) and crater (right images) on Mars, clays rich in iron and magnesium (shown in blue in bottom false-color images) have chemical compositions suggesting that most of the water on early Mars lay underground. Credit: NASA, JPL-Caltech, JHUAPL

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