In this video profile produced for Teachers' Domain, meet conservationist Steve MacLean, an Inupiaq from Barrow, Alaska, who works to preserve the health of the Bering Sea ecosystem.

In this activity, students build a water filter with activated carbon, cotton and other materials to remove chocolate powder from water.

This activity is a field study where students gather data on a stream based upon their protocol. They will correlate their data with another group and present their results to the class. They will develop and defend in class a new experimental question for a spring study.

This activity is a field investigation where students gather data on stream health by collecting macro-invertebrates at three different locations and then develop an experimental question through land use and topographic map research to explain differences in water quality.

Students learn about contact stress and its applications in engineering. They are introduced to the concept of heavy loads, such as buildings, elephants, people and traffic, and learn how those heavy loads apply contact stress. Through the analysis of their own footprints, students determine their contact stress.

During this project, students will be working to cooperatively create a field guide to trees in the neighborhood near the school. In doing so they will be making observations, introduced to tree and plant anatomy and physiology, and will learn how to make and use dichotomous keys.

See how Boston middle and high school students shape urban planning in their own neighborhoods, through place-based Bioacoustics and Urban Trees curriculum projects. [7:00]

Studying life on the seafloor beneath Antarctica's thick ice is a major challenge for ecologists. Learn about a new device that can reach those icy depths in this video segment adapted from WomenInAntarctica.com.

The Take Action column in the free, online magazine Beyond Weather and the Water Cycle suggests actions young people (K-grade 5) can take to reduce the impacts of climate change. The magazine examines the recognized essential principles of climate literacy and the climate sciences as well as the guiding principle for informed climate decisions.

This article describes energy efficiency as it relates to home and school energy use and provides ways that children can help.

Students use spreadsheets to analyze the reasons why New Orleans has subsided in the past 250 years.

This article provides an overview of Tapped In, a web-based learning environment for educators and professional development providers.

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

This article provides an overview of energy education curriculum materials available from the National Energy Education Development (NEED) Project. Teachers may become a member, or use free online resources.

This article provides lesson plans about natural resources and energy sources for elementary teachers.

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.

This investigation is a laboratory activity in which the alkalinity of 2 types of substrates (carbonate vs. non-carbonate) are compared on the basis of titration. Students will reflect on the relationship of alkalinity and toxic heavy metals. Teaching ideas from: Project Wet, Water Education for Teachers as found in: "Healthy Water Healthy People, Field Monitoring Guide "(2003)

Prior to reaching households, water is exposed to a variety of treatments designed to render it fit for human consumption and use. One of the first treatment steps is the removal of suspended solids using chemical additives called flocculants. In this activity, students learn about two commonly used flocculants and clean water collected from a local pond or river. They experiment with flocculant, stirring and pH variables.

Examine how the human/grizzly relationship has changed since the closing of the Yellowstone dumps, and also learn about the challenges posed to both humans and bears, in this video segment from Nature.

This essay is a thorough investigation of the various political and philosophical changes which have occurred throughout the environmental movement. Examines the current situation and includes references. Excellent article.