Coral reefs are often portrayed as brightly lit, bustling underwater marvels full of colorful creatures. This video segment, adapted from NOVA, paints a different picture as it explores the nocturnal behavior of organisms in the reef.

This video segment adapted from the NOW-RAMP 2002 Expedition documents a research expedition to Nihoa Island. It showcases Nihoa's unique birds and plants, the threat posed by invading grasshoppers, and restoration efforts.

Observe the Nisqually Glacier at Mount Rainier in this video segment from NatureScene.

Nitrogen, one of the most abundant elements in the universe, is essential to life. This interactive activity adapted from the University of Alberta provides an overview of the nitrogen cycle.

Find information about diversity among genes, species, and ecosystems that helps answer questions about the importance of biodiversity and how we can save species from extinction.

In this series of activities, students observe and sketch the environment outside their school using their senses. Students create a classroom book using one of their sketches.

This video segment produced for Teachers' Domain features a time-lapse video of clouds forming, changing, and moving across the sky.

Learn how snowfall happening later in the year than usual is impacting cultural practices in this video segment about climate change adapted from the College of Menominee Nation.

In this video segment adapted from the College of Menominee Nation, tribal members observe lower water levels in lakes and streams and call for global, collaborative solutions to address climate change.

This video adapted from KTOO explores the impact of oil contamination on the herring population of Prince William Sound, Alaska, in 1999, 10 years after the Exxon Valdez oil spill.

Data modeling activity using oil reserve and consumption data. Students predict when oil reserves meet or exceed reserves.

This video segment adapted from NOVA follows the clean-up effort after the 1989 Exxon Valdez oil spill off the coast of Alaska. Also featured is a marsh where an oil spill occurred 20 years earlier; analysis suggests that environmental damage may last for decades.

In this video segment adapted from the Yukon River Panel, visit fishing communities along the Yukon River and see how Alaska Native peoples exercise stewardship of salmon to ensure that it remains a central food source and cultural touchstone.

Against the backdrop of the devastating 1930's Dust Bowl, this video segment adapted from Interactive NOVA profiles an organic farmer and the techniques he uses to conserve topsoil.

This activity is a field investigation where students will make observations on a chosen location every two weeks for the period of one school year. They will record their observations using a digital camera and a nature journal.

This activity is an introduction to setting up a composting worm bin in the classroom. It is part of a yearlong study on the interaction and influences that living system have on each other.

In this field exploration, student teams (consisting of 3 students) will investigate whetherincandescent, fluorescent or a no light situation will attract the most nocturnal insects.

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.