Catalog Search Results
1) Atmosphere
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English
Description
The atmosphere is what makes the Earth habitable. Heat-trapping gases allow ecosystems to flourish. While the NOAA Global Monitoring Project documents the fluctuations in greenhouse gases worldwide, MIT's Prof. Kerry Emanuel looks at the role of hurricanes in regulating global climate.
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This Science Screen Report explains the importance of the gas layers surrounding our planet and the consequences of changing them. Detailing how the atmosphere and the Sun's radiation create the greenhouse effect, the program outlines ways that human activities-including deforestation and the use of fossil fuels-have increased carbon dioxide levels and affected the ozone layer. Specific methods of reducing greenhouse gases, such as recycling and carpooling,...
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People everywhere are interested in the weather, but how does it all work? Beginning with Earth's atmosphere-its evolution, its gaseous composition, and its four regions-this video takes a close look at how conditions combine to create climate and weather. Topics include the Koppen Climate Classification System; weather prediction; types of clouds and precipitation; thunderstorms, tornadoes, and hurricanes; and weather patterns such as El Nino and...
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The air around us is not just empty space; it is an integral part of the chemistry of life. Plants are made from carbon dioxide, nitrogen nourishes the soil, and oxygen gives us energy to keep our hearts pumping and our brains alive. This film reveals the story of how we came to understand what air is made of. It began as a simple desire to further our knowledge of the natural world during the Age of Enlightenment, but it ended up uncovering raw materials...
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Oxygen is key to Earth's success as a habitable planet. But where did it come from? And when and how did it begin to transform the early atmosphere? This science bulletin explains how scientists are coming to understand oxygen's origins - not by studying ancient air, but by retracing its impact on Earth's surface.
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Ice may be nothing more than frozen water but it holds extraordinary power. Descending 150m down a frozen waterfall, Dr Iain Stewart looks at a glacier in action from below and discovers why the huge Jacobshaven Glacier is retreating. He shows how ice shaped our past and may now threaten our future.
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Balloons were the first vehicles to fly and Archimedes' principle is the secret of their lift-carrying power. Use the ideal gas law to determine air density and the hydrostatic equation to chart air pressure versus altitude. Then apply these concepts to lighter-than-air craft to learn how the Breitling Orbiter balloon was able to circumnavigate the globe non-stop.
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English
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This episode uncovers the impact that humankind and industrialization are having on the air we breathe. Maintaining safe levels of greenhouse gases in our atmosphere is an incredibly complex issue-influenced, as it is, by factors that come from the depths of the ocean, the stratospheric heights of the ozone layer, and everywhere in between. The solution, too, will be complex, of course, but it's heartening to know that scientists in New Zealand are...
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Complete your cherry study with a textured background of complementary colors! Then add realistic shadows to provide depth to the cherries, and learn why shadows aren't made with just black colored pencil. Finally, learn techniques for laying down the background before starting the subject.
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English
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This program explores essential literary terms such as theme, atmosphere, foreshadowing, diction, and anaphora while analyzing classic works of literature. These terms are covered in depth with detailed graphics, engaging examples, and exciting video.On-screen multiple-choice reviews at the end of each segment reinforce important concepts and make learning fun.
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Compared to Venus or the giant planets, Earth has a relatively thin atmosphere. And yet, without this single, fragile layer, life would not have evolved and thrived. Discover the unique properties of each atmospheric layer, and encounter specific ways we've explored each layer as a springboard to exploring the rest of our solar system.
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To predict weather and understand climates, researchers use physics, environmental science, mathematics, and information technology to interpret huge amounts of oceanic, atmospheric, and terrestrial data. Filmed with the assistance of Australia's Bureau of Meteorology, this program introduces the allied sciences of meteorology and climatology. After explaining how the sun, wind, and clouds interact to create weather, the video explains how scientific...
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Destabilization in the Middle East and concerns over global warming are heating up the national dialogue on how America intends to power itself into the future. In segment one of this NewsHour program, Michael Marvin, of the Council for Sustainable Energy; Dan Reicher, of the World Resources Institute; Myron Ebell, of the Competitive Enterprise Group; and Herbert Inhaber, author of Why Energy Conservation Fails, consider the big picture. Then, segment...
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VisionsofEarth is a DVD-based series derived from National Science Education Standards. It was designed to fit with current and future Earth science curricula in schools across the country. Drawing upon the American Geological Institute's huge geoscientific archive of HD television footage, this video looks at the hydrosphere and the atmosphere as they interact with Earth systems. It covers their formation and components, the water cycle, geological...
19) Geoengineering
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English
Description
Our planet's climate is a highly complex, interlocked, self-organizing system. This video clip asks whether or not we could intervene and take over some of the control of the climate? Advocates of geoengineering believe we could and that we could use this control to combat some of the negative effects of climate change. For example, one of the suggestions is to release a whole lot of sulfate particles into the sky to cool down the global warming caused...
20) Cloud Seeding
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English
Description
Most scientist have resisted the idea of cloud seeding, which is done by releasing fine particles of silver iodide into the air to get clouds to produce more rainches However, this video clip takes a look at new research that offers hard evidence that cloud seeding can produce good amounts of extra rainfall when needed.