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How to Make a Volcano
Making a volcano involves mixing active yeast, warm water, hydrogen peroxide, a bit of red food coloring and dish soap together into a small container to create a chemical reaction. Create a volcano, under parental supervision, with a demonstration from a science teacher in this video. Run time 03:37.
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The Fact of Global Warming
Slowly, the globe confronts global warming. Quickly, the globe warms. But can we trust computerized climate models? What's happening to the oceans and the ice? Could warming damage your lungs?
Author(s): David Tenenbaum

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Global Climate Change: Environmental Studies 245
This website is the homepage of the St. Olaf interdisciplinary course, Global Climate Change. The course focuses on how and why Earth's climate has changed throughout its history and how it is likely to change in the near future. The course draws from geology, chemistry, meteorology, oceanography, and policy studies. Much of the science involved in this topic is cutting-edge, so quite a bit of the reading will be from scientific journals. Users can follow links to a PDF syllabus and assignments
Author(s): Robert Jacobel

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West Coast Field Guide of the National Marine Sanctuaries
Our five West Coast national marine sanctuaries encompass nearly 12,000 square miles of ocean, which includes hundreds of miles of dramatic coastline. Teeming with life and filled with history, they offer countless opportunities for exploration, recreation and contemplation. This guide will introduce you to the natural and cultural wonders of your national marine sanctuaries. Whether you're traveling on foot or bicycle, by car or by boat, above water or diving below, it can lead you to new disco
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Edward Shorter on the history of sex - 2005
Edward Shorter delivers a lecture discussing the history of sex and his book Written in the Flesh at Hart House at the University of Toronto - September, 2005.
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History: Ask a Question
lets students correspond with government historians via email. Historians' names and addresses are listed by expertise with an emphasis towards those researching the national parks, the National Park Service, and American history.
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Maps of Indian Territory, the Dawes Act, and Will Rogers' Enrollment Case File
This lesson encourages students to study a variety of documents to understand the impact of a particular piece of legislation and relates to the powers granted to Congress in Article I, Section 8 , of the Constitution, related to making laws. It correlates to the National History Standards and the National Standards for Civics and Social Sciences. It also has cross-curricular connections with with history, government, global studies, and music.
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Greenland's Receding Ice
After Antarctica, Greenland's ice cap contains the second largest mass of frozen fresh water in the world. Based on new research using NASA's airborne laser altimeter, scientists have identified pronounced thinning of Greenland's ice cap. This new research indicates enough ice loss to cause a measurable ...
Author(s): Michael Starobin

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Spyhop
Spyhopping is when orcas vertically propel themselves halfway out of the water and stay there for a moment, akin to a human treading water. They do this to sneak a peek at their surroundings above the surface - most commonly for food, but also just to see how close they are to shore. No narration. Run time 0:48.
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What is the Spyhop?
What Is The Spyhop? Watch this cool video from explore.org and see the Orca Whales jumping and “hopping” out of the water. This fun move allow them to shoot themselves halfway out of the ocean and then stay still, treading water. This allows them to see if any tasty meals are around, and also to learn their location and where they are in relation to the shore line. Watch and learn all about the Spyhop! No narration.  Video is set to music with information written at the bottom of the screen
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adler 023 b part 1 re-uploaded
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"Wheelchair Design in Developing Countries, Spring 2009"
"According to the United States Agency for International Development, 20 million people in developing countries require wheelchairs, and the United Nations Development Programme estimates below 1% of their need is being met in Africa by local production. Wheelchair Design in Developing Countries (WDDC) gives students the chance to better the lives of others by improving wheelchairs and tricycles made in the developing world. Lectures will focus on understanding local factors, such as operating e
Author(s): Smith, Amy,Winter V, Amos G.

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"History and Anthropology of Medicine and Biology, Spring 2009"
" This course explores recent historical and anthropological approaches to the study of life, in both medicine and biology. After grounding our conversation in accounts of natural history and medicine that predate the rise of biology as a discipline, we explore modes of theorizing historical and contemporary bioscience. Drawing on the work of historian William Coleman, we examine the forms, functions, and transformations of biological and medical objects of study. Along the way we treat the hist
Author(s): Helmreich, Stefan,Jones, David

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Building a Thermometer
The purpose of this activity is to build an instrument that can be used to measure water temperature. Students construct a soda-bottle thermometer, which is similar to the thermometer used by GLOBE schools. Both are based on the principle that most substances expand and contract as their temperature changes. This experiment also demonstrates the principle of heat transfer. The intended outcome is that students will understand why and how a standard thermometer works.
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Using and managing waste
Do you know what happens to the things you throw away? Sustainable management of municipal and industrial waste is essential in any society, but is particularly crucial for a future in which we face diminishing resources and a growing population. This album considers the issues that are driving the waste management industry across the EU, looking in depth at processes of recycling, landfill, incineration, obtaining energy from waste, and composting. In the bonus audio tracks Professor Andrew Por
Author(s): The iTunes U team

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Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

Elements of Esperanto 7. The -as ending.
This is one in a series of podcasts that will quickly teach you the basic elements of Esperanto.

If you want to get a feel for what Esperanto is like, how it sounds, how it works, these lessons ma

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Elements of Esperanto 8. The -os ending.
This is one in a series of podcasts that will quickly teach you the basic elements of Esperanto.

If you want to get a feel for what Esperanto is like, how it sounds, how it works, these lessons ma

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Reptiles of the Congaree Swamp
In this video segment from NatureScene, host Jim Welch and naturalist Rudy Mancke come across a broadhead skink, an eastern mud turtle, and a brown water snake, each in its own habitat. They discuss characteristics and behaviors of these animals. Closed captioning included.  Run time 02:53.
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065 - BELLUM HELVETICUM - LOWE BUTLER WALKER
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Nanna's Quicksand Demonstration
What is quicksand? Join Nanna Knowitall in her mad lab as she explores the properties of quicksand. Nanna uses cornstarch, water, coffe or dirt, a bowl and mixer to conduct her experiment. She finishes her experiment with a very simple explanation of how quicksand works.  Run time 06:28 
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