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Browse results: Evolution and Diversity

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RESOURCE	GRADE LEVEL	MEDIA TYPE
Killer Microbe Learn how biotechnology is used to analyze the evolution of a formerly harmless bacterium into a highly drug-resistant and lethal pathogen in this video segment adapted from NOVA scienceNOW. Accessibility features: Caption	9-12	Video
Leafy Spurge This video segment from Evolution: "Extinction!" shows how biological control is successfully combating North Dakota's infestation of leafy spurge, a non-native plant. Accessibility features: Caption	9-12	Video
Mass Extinction In this video segment adapted from NOVA scienceNOW, learn about a chain of events, including ancient volcanoes, global warming, and deadly gases, which may have caused Earth's greatest mass extinction 250 million years ago. Accessibility features: Caption	6-12	Video
Masters of Disguise In the face of danger, what's a spineless animal to do? This video segment introduces the concept of camouflage -- how animals achieve it and how this form of disguise benefits both predators and prey. Footage from NOVA: "Animal Impostors." Accessibility features: Audio Description, Caption, Transcript	K-12	Video
Profile: Ethiopian Anthropologist In this video adapted from NOVA scienceNOW, meet Ethiopian anthropologist Zeresenay Alemseged and find out why his work has made him a national hero and the leader of a new generation of African-born anthropologists. Accessibility features: Caption	9-12	Video
The Reproductive Role of Flowers In this video segment adapted from NOVA, learn about the critical role of flowers in seed plant reproductive biology. Accessibility features: Caption	6-12	Video
Revealing the Origins of Life Learn how scientists explore the chemistry behind the first life on Earth and discover one way it may have arisen from simple chemicals and natural pathways, in this video segment adapted from NOVA scienceNOW. Accessibility features: Caption	9-12	Video
Reverse Evolution Machine In this video adapted from KQED's QUEST, learn how scientist David Haussler is using biotechnology to reconstruct ancient genomes in an effort to find out how animals have evolved over time. Accessibility features: Caption	9-12	Video
Root Systems of Trees at the Congaree Swamp Learn about root systems of trees in the Congaree Swamp National Park in this video segment from NatureScene. Accessibility features: Caption	3-8	Video
Ruminants Why do cows chew their cud? This video segment from Secret of Life: "Accidents of Creation" describes the physical adaptations that have made ruminants some of the most important, and certainly the most efficient, plant eaters on earth. Accessibility features: Audio Description, Caption	6-12	Video
Secrets in the Salt This video segment adapted from NOVA scienceNOW describes a team of scientists searching for evidence of ancient life within a salt deposit that formed 250 million years ago. Accessibility features: Caption	6-12	Video
Switching Genes On and Off This video segment adapted from NOVA reveals how "junk" DNA helped solve an evolutionary mystery: Why do certain species of fruit flies have wing spots while others don't? Accessibility features: Caption	8-12	Video
Transitional Tetrapod Fossil In this video segment from NOVA: "Judgment Day: Intelligent Design on Trial," learn about the discovery of a well-preserved transitional fossil and how such transitional fossils support the theory of evolution. Accessibility features: Caption	6-12	Video
Unique Species of Kentucky's Green River This KET video from Kentucky's Last Great Places shows how the Green River has remained unusually clean and why it is home to several endangered aquatic species. Accessibility features: Caption	6-12	Video