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This four-part animation series explores the biology of the virus SARS-CoV-2, which has caused a global pandemic of the disease COVID-19.

This video follows scientists working in Bangladesh as they test fruit bat populations to determine whether they are infected with Nipah virus, a potentially deadly human pathogen.

This film explores how the genetic and anatomical legacy of a fish can be seen today in the human body.

This film explores what our hair, teeth, and hearing reveal about our evolution from ancient reptilian ancestors.

This video shows the reactions of first-grade students to a replica of a Tiktaalik fossil.

This film tells the story of the scientists and the evidence involved in one of the most important scientific quests of the 20th century: the discovery of the structure of DNA.

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 film explores how gene duplications and mutations have led to remarkable physiological adaptations in Antarctic fish.

This animation shows how a variety of proteins interact to regulate the transcription of eukaryotic DNA into RNA.

This animation explores the chemical components and bonds of the nucleotides that make up DNA.

This animation shows how dengue virus infects a cell and replicates itself with the help of its host’s cellular machinery.

This animation describes PCR, a standard laboratory technique for making many copies of a specific DNA sequence.