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Understanding Global Change

This interactive module allows students and educators to build models that explain how the Earth system works. The Click & Learn can be used to show how Earth is affected by human activities and natural phenomena.

How The Body Uses Fat

This tutorial explores how fat is digested, transported, stored, and used for energy.

Molecular Structure of Fat

This tutorial describes the various forms of “fat” — from a tissue, to a cell type, to a class of molecules.