In this video profile adapted from NOVA scienceNOW, learn about geneticist and rock musician Pardis Sabeti, whose innovative insights into natural selection demonstrated how beneficial mutations spread quickly through a population.

This video segment from NatureScene examines the landforms of Death Valley and how they came to be.

See how the geology of the North Dakota badlands has changed over time in this video segment from NatureScene, featuring the landscape at Theodore Roosevelt National Park.

Kibera, a poor community, in Nairobi, was a blank spot on the map until recently. This video from Penn State Public Broadcasting’s Geospatial Revolution shows how geospatial technology enabled residents to map resources to help their community.

This ZOOMSci video segment teaches you how to germinate seeds in a plastic bag and helps you understand some of the factors that influence the germination process.

Learn how scientists regulate a nuclear reactor in this animation-enhanced essay from the FRONTLINE Web site.

This video segment, adapted from NOVA, chronicles the education of leading chemist Percy Julian. Although Julian began his elementary school years in the Deep South under Jim Crow laws, he became one of the few African Americans of his time to earn a Ph.D.

This video segment from Outdoor Nevada looks at the Gila monster's behavior, habitat, and unique adaptive characteristics.

In this video from Nature, learn about the many different features and effects of glaciers in Ireland.

Featuring images of glacier formations, this interactive resource adapted from the National Park Service explains what glaciers are, where they are found, how they form, and how they move.

Learn about the trailblazing, gender non-conforming performer Gladys Bentley with this digital short from Unladylike2020. Gladys Bentley fled her homophobic Trinidadian immigrant family in Philadelphia, PA at age 16 to join New York's Harlem Renaissance jazz scene as a cross-dressing performer. In a time when homosexuality was widely considered sinful and deviant, Bentley wore men's clothing -- a tuxedo and top hat -- and became famous for her lesbian-themed lyrics covering popular tunes of the day, and for openly flirting with women in the audience. In the 1950s, succumbing to pressure from the black church and McCarthy Era harassment of the LGBTQ community, Bentley said of her gender identity, "I am a woman again!" Constantly reinventing herself, Bentley challenged norms and pushed boundaries. Support materials include discussion questions, vocabulary, a research project on queer identity during the Harlem Rennaissance, and a close reading of Bentley's famous essay, "I am a Woman Again".

In this video adapted from the Encyclopedia of Physics Demonstrations, learn how a glass beaker vibrates at a specific frequency and how resonance can force it to shatter.

This video segment adapted from NOVA/FRONTLINE looks at the future of global warming as developing nations, including India and China, increase their need for energy.

Is the hydrogen car the answer to global warming? This video segment adapted from NOVA/FRONTLINE looks at the pros and cons of this developing technology.

This video segment adapted from NOVA/FRONTLINE examines the greenhouse effect, its role in keeping Earth habitable, and the industrial changes that have led to an increase in the planet's average temperature.

In this video segment adapted from Spanner Films, visit the Alaska Native village of Shishmaref, and learn how an entire town may be forced to relocate because of warmer temperatures, melting sea ice, and coastal erosion.

Learn about the lives of gorillas born in captivity in this video segment from Nature.

This video segment adapted from NOVA explores the effects of the Glen Canyon Dam on the beaches, wildlife, and vegetation of the Colorado River.

In this video segment adapted from NOVA, a fossil found among the Grand Canyon's rock layers reveals the existence of a shallow sea that once covered most of western North America.

This video segment adapted from NOVA features the youngest rock formations in the Grand Canyon, lava dams, and how they are subject to the eroding power of water.