The peacock provides a classic example of sexual selection, the force behind nature's extravagances. From Evolution: "Why Sex?"

Talon Wilson is learning the master craft of blacksmithing at Sätergläntan school in Sweden and the experience has caused him to think deeply about who he is and how his Dakota ancestry can influence his art.

A lesson plan for grades 9-12 is included as a gallery asset and in the support materials.

More About This Resource:
Postcards is an award-winning series showcasing the arts, history, and cultural heritage of western Minnesota and beyond. Funding for Postcards comes from the Minnesota Arts and Cultural Heritage Fund. To watch more Postcards, visit the show page or video portal.

This video segment from the Nevada Department of Wildlife looks at tarantulas' survival skills and their habitat.

Bonnie Chen builds on students' prior knowledge of mutations to lead her class through a simulation of wading birds feeding.

Marilyn Havlik leads students through a simulation of the Hardy-Weinberg Principle to develop their understanding of population genetics.

Now more than ever, it’s essential that young people know how to use credit cards wisely and manage their debt, before they learn the hard way. This video features Lauren Popkoff, a teacher at Brooklyn College Academy in Brooklyn, New York. As Lauren lifts the veil off of credit, she outlines a lesson she teaches her high school students to arm them with the knowledge they need to make wise financial decisions. In this lesson, Lauren presents the advantages and disadvantages of credit, compares credit card offers with her students, discusses ways to establish credit, and highlights the credit card act of 2009.

This interactive activity from A Science Odyssey offers a historic tour of 20th century home technologies.

In this video adapted from KUAC-TV and the Geophysical Institute at the University of Alaska, Fairbanks, learn how tectonic plate movement is responsible for building mountains, such as the Wrangell and St. Elias Mountains.

This interactive activity produced for Teachers' Domain shows the relationship between tectonic boundaries and the locations of earthquake events and volcanoes around the world.

In this transcript of an interview filmed for Evolution: "Great Transformations," Ted Daeschler and Neil Shubin describe the discovery and significance of some of their key fossil finds.

In this video adapted from Earth Island Institute, meet a high school student who educated her community about how a coal-burning power plant was contributing to asthma and other health problems there.

Why do teenagers act the way they do? This video segment from FRONTLINE: Inside the Teenage Brain explores the work scientists are doing to explain some of the mysteries of teenage behavior.

In this video adapted from Earth Island Institute's New Leaders Initiative, meet a high school student who worked to enact a state law to make cosmetics safer, after she learned they contained toxic chemicals linked to cancer.

In this video segment from Between the Lions, a large dinosaur puppet teaches a class of monkeys about ten little words through a song. These words promote reading fluency and include: I, he, they, with, was, his, are, on, as, and for. This video segment provides a resource for Fluency and Phonological Awareness. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.

Watch the ZOOM cast discover which insulator -- newspaper or aluminum foil -- is better at keeping an ice cube frozen longer.

In this video segment adapted from ZOOM, cast members show you how to make your very own electroscope. You can use it to find out if an object is electrically charged.

In this video segment from Cyberchase, learn about the importance of creating a model as the CyberSquad designs a giant Trojan Ducky that will help them enter a fort without being noticed.

This illustration from Evolution by Monroe W. Strickberger shows the remarkable similarities between the bones in the forelimbs of various tetrapods, all of whose limbs serve very different functions.

Take a behind-the-scenes tour of the Southeastern Theatre Conference (SETC) Design Competition and learn about the skills required for a career in costume design.