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This film begins with phenomena linked to climate change and then examines how Earth’s temperature is controlled, how we know it is changing, and how the current changes compare to those over the last 800,000 years.

This animation shows how mutations in an ion channel protein lead to the genetic disease cystic fibrosis. The animation also discusses how research on this protein has been used to develop treatments for the disease.

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

This animation describes how skin color is generated by skin cells as protection against ultraviolet (UV) radiation.

This animation provides an overview of the greenhouse effect, a process that warms the atmosphere and surface of Earth.

This animation explores how carbon enters the atmosphere and can be removed through a series of chemical reactions.

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

This animation shows how HIV infects a cell and replicates itself using reverse transcriptase.

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

This animation shows how a genetically modified virus can be used to destroy cancer cells.

This animation shows how proteins in the cell are tagged for disposal by ubiquitin and then degraded by the proteasome.