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This interactive module introduces the anatomy of the immune system and walks through the timeline of a typical immune response.

This interactive module explores how different animals — elephants, birds, and bats — have evolved distinct ways of using sound to communicate.

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 interactive module explores the circulatory systems of major vertebrate groups to gain insights into their evolution.

This tutorial describes the symbiosis between the Hawaiian bobtail squid and bioluminescent bacteria.

This interactive, modular lab explores techniques for identifying and recording the electrical activities of neurons, using the leech as a model organism.

This interactive, modular lab explores how the ELISA method can be used to test blood samples for evidence of certain diseases.