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This interactive module explores biomes, climate, biodiversity, and human impacts around the globe and at different times.

A number of questions are embedded within the short film Popped Secret: The Mysterious Origin of Corn, which explores the genetic and archaeological evidence that corn was domesticated from a wild Mexican grass called teosinte.

This tutorial describes how animals differ in their abilities to heal wounds and regenerate lost body parts or damaged tissues.

This tutorial explores how stem cells can be used to treat a wide range of diseases.