Summary: 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...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2006
View online at AVOD
Summary: Freon was a refrigeration breakthrough in 1928. It took 45 years for scientists to recognize its dangers, and another 15 for the international community to enact a worldwide ban on all CFC gases. This program illustrates that long process of problem-solving and political action, focusing on the work of Nobel-winning chemists F. Sherwood Rowland and Mario Molina and how their discoveries led to...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2006
View online at AVOD
Summary: The weather-a phenomenon clearly beyond human control!-is nevertheless a topic of fascination to people the world over. A combination of high-quality film footage and detailed animations, this collection of 48 video clips (30 seconds to 2 minutes each) discusses Earth's atmosphere, precipitation, meteorology, climates, the environment, and pollution. Video clips include: Earth's...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2011