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Window Under Water
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Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.
Water Treatment
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Water treatment on a large scale enables the supply of clean drinking water to communities.
Exploring Forces: Gravity
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In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.