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The Ancient Egyptians used a naturally-occurring salt from the banks of the Nile River, called natron, to mummify their dead.

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

This activity offers learners and their families several ways to raise their awareness together about home water.

In this activity, learners explore in what ways the shape of the land and the pull of gravity influence how water moves over Earth.