This series of activities demonstrates effects of rising levels of greenhouse gases. Specifically, it shows how: an increase of heat-trapping gases atmosphere raises temperatures; higher temperatures affect the water cycle; and rising sea levels could affect coastal areas as a result of glacial and polar ice. Designed to teach through scientific inquiry, the activities seek to stimulate thought about ... Full description.

These on-line, problem-based modules address events such as volcanoes, hurricanes, dinosaur extinction theories, deforestation, endangered species, and global climate change. The site uses NASA remote-sensing images and includes a tutorial about how to analyze Landsat images with NIH Image. Full description.

This ocean-science Web site allows users to learn about many important ocean processes, linked to teaching material and sources of real-time ocean data. The site also has complete college-level and graduate courses and textbook (which can be freely downloaded) in oceanography and physical oceanography. Full description.

This Web site includes shares the images, stories and discoveries that emerge from NASA Earth science research, including its satellite missions, in-the-field research and climate models. View global maps of NASA data, check out the Image of the Day and images of current events, and read feature articles and blogs. Also includes special collections of NASA images, including the World of Change series, ... Full description.

In this Web-based, interactive story, Tutangiaq (Too-tang-geye-ack - nicknamed 2T), a Canada Goose, flies across Alaska looking for his family. As he flies, he tells students about the 49th state. Students learn several facts about the state, including how Alaska was purchased from the Russians,. They can also compare the size of Alaska to other states. 2T takes a flight across the volcanic chain ... Full description.