Have we overstepped Mother Earth's boundaries? What are the consequences? In this video segment adapted from Haskell Indian Nations University, hear a Native perspective on our relationship with the natural environment.

Advertises itself as "instant access to tens of thousands of classroom-ready, digital resources." Videos, games, audio clips, photos,lesson plans, etc.

In this video from Wide Angle, visit the Pankisi Valley, a no-man's-land in the Northeast of Georgia that has become home to the rebels and refugees of the Chechen war.

In this interactive activity from ChemThink, examine the basic properties of matter at an atomic level and consider how various atoms affect the way a substance behaves.

In this video segment from Cyberchase, a plant expert shows Bianca the patterns and symmetry found in nature.

This video segment adapted from the NOW-RAMP 2002 Expedition documents a research expedition to Pearl and Hermes Atoll in Hawai`i. Watch as biologists assess the bird and plant populations and then work to eradicate invasive species.

WNBA athletes discuss attendance at basketball games in terms of percentages in this video segment from TV 411.

In this video from Outdoor Nevada, Brian Wignall speaks with an ornithologist about the peregrine falcon, a majestic and endangered species that is one of the fastest animals in the world.

In this video segment from Cyberchase, Music of the Spheres plays a song using the correct beats and patterns, which helps to restore balance and harmony at Mount Olympus.

This interactive periodic table developed for Teachers' Domain provides detailed information about the chemical properties of elements and illustrates the electron configurations that determine those characteristics.

In this video segment from Evolution: "Extinction!", geologist Peter Ward discusses evidence for a Permian-Triassic mass extinction.

This video segment from Nature profiles a small business in which homing pigeons play a central role.

In this video segment from Nature, animal lovers talk about their experiences having pigs as pets.

Watch the rubber bands vibrate on homemade guitars in this video segment adapted from ZOOM as cast members talk about pitch and demonstrate how to make a cereal box instrument.

This video segment, adapted from ZOOM, explores the different sounds that a simple drinking straw can produce when you cut the straw and blow into it.

This video segment, adapted from ZOOM, demonstrates how to use a drinking straw and a bottle full of water to make low- and high-pitched sounds.

This Cyberchase video features Bianca who uses Venn Diagrams to make a pizza that satisfies the topping preferences of her friends.

Learn about NASA’s Kepler mission and how scientists search for planets orbiting stars outside our solar system in this video segment adapted from NOVA.

In this media-rich, self-paced lesson, students explore the industries that produce and rely on advanced technology and assess how their goals and interests may make them well suited for a career in this cutting-edge sector.