Podcasts of the Science Update radio show are available by subscription, or they can be streamed or downloaded directly from the website. These daily sixty-second radio features, sponsored by the American Association for the Advancement of Science (AAAS), cover the latest discoveries in science, technology and medicine. Subscription podcasts are delivered each Friday directly to subscribers' computers. ... Full description.

Videoconferencing technology allows people at two or more locations to see and hear each other at the same time. The SBC Knowledge Network Explorer Videoconferencing for Learning web site supports the effective and educational uses of videoconferencing technology by providing basic information about the technology and instructional applications as well as resources to help you link with other videoconferencing ... Full description.

This is the record of an environmental reporter's expedition to Antarctica. During his time in Antarctica, the author wrote reports and captured photos, video and audio of the animals, the environment and the people who live there. Topics include wildlife and how it has been affected by climate change, equipment needed for working in Antarctica, and life at Palmer Station. A series of journal entries ... Full description.

This is a report of a joint Canadian and American project sampling water in the Beaufort Sea and the MacKenzie River. The initial sampling phase was conducted by helicopter (July 21-26, 2004). The first portion of the ARDEX project was concerned with collecting water samples for nutrients, colored dissolved organic matter (CDOM) and dissolved organic carbon (DOC) from various points in the rivers ... Full description.

This set of multimedia resources, produced for the NOVA television broadcast 'Mass Extinction', explains mass extinctions in general, and in particular the extinction event that occurred at the end of the Permian period, in which more than 90 percent of all marine species died out. An interactive feature presents some of the theories about what caused this event, and lets users vote for the one they ... Full description.

This National Aeronautics and Space Administration (NASA) article discusses the connection between dust storms in Africa, and red tides along the Florida coast. Red tides are blooms of toxic algae that kill fish, birds, and mammals, as well as cause health problems in humans. Storm activity in the Sahara Desert region kicks up topsoil that winds transport into the Gulf of Mexico. These clouds fertilize ... Full description.

This is the home page for the daily science public radio series, Earth and Sky. This web site provides live web casts and an archive of past shows. Its Features section contains articles on earth science, astronomy, and environmental science. It also contains news bulletins, a sky watching forecast, frequently asked questions, question of the week, ask an expert, and cool site reviews. The Teacher's ... Full description.

Estuaries.Gov is the educational site for NOAA's National Estuarine Research Reserve System (NERRS), managed and maintained by NERRS education staff. This site provides, primarily, an avenue for elementary, middle and high school students, and their teachers, to learn more about estuaries, research, and explore NOAA?s ?living laboratories? - the National Estuarine Research Reserves. The Estuary Video ... Full description.

This website, designed for K-12 teachers and students, offers materials and activities based on the "Extreme 2004: Exploring the Deep Frontier" mission to explore deep-sea hydrothermal vents. Students can step into the shoes of deep-sea scientists as they follow the expedition and listen to recordings of student communications with the researchers via e-mail and telephone calls placed directly to ... Full description.

These podcasts (RSS feeds) are published by the National Aeronautics and Space Administration (NASA). Topics include lunar and planetary science, NASA missions, solar science, physics and astrophysics, space technology, and many others. Older podcasts dating back to 1996 are archived, and Spanish translations are availble for some. The podcasts can be streamed from the website or downloaded. Written ... Full description.