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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 film explores how life recovered after an asteroid wiped out the dinosaurs and how those events shaped the diversity of plants and mammals on Earth today.

This short video explores how a baby’s microbiome is established during birth.

This interactive module explores the environmental factors and species involved in five major mass extinctions.

Several questions are embedded within the short film The Day the Mesozoic Died, which tells the story of the scientific quest to explain one of the greatest, long-standing scientific mysteries: the sudden disappearance of the dinosaurs at the end of the Cretaceous period.

This video describes how prehistoric extinction rates are calculated from fossil data in a paleodatabase and compared to modern extinction rates.

This film tells the story of the scientific quest to explain one of the greatest, long-standing scientific mysteries: the sudden disappearance of the dinosaurs at the end of the Cretaceous period.

This video shows real footage of a cytotoxic T cell killing a cell infected by a pathogen.

This animation shows how a cell infected by a virus signals cytotoxic T cells to destroy itself.

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