Summary: The Earth's surface is a fragile mask, and this Science Screen Report reveals the turmoil beneath it. A cutaway view of the planet depicts its layers-including its crust, hot mantle, and superheated core-and leads to an outline of plate tectonic theory. The Himalayas, the Matterhorn, and the Hawaiian Islands are analyzed as examples of tectonic and volcanic activity, while the core's...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2006
View online at AVOD
Summary: The demise of the dinosaurs remains a mystery. One theory is that a violent series of volcanic eruptions led to periodic mass extinctions of animal life throughout the Cretaceous period. Viewers follow scientists as they trace the evidence deep into the earth's core of molten metal and learn why these deadly eruptions were so vital to the progress of evolution.
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2007
View online at AVOD
Summary: The map of the Earth is a flat picture of the Earth's surface; this BBC Horizon program presents the story of how Harold Wellman changed that picture. Hired by the New Zealand Geological Survey to map the underlying bedrock of the Southern Alps region, he noticed that there were invariably only two kinds of rock, granite and schist. His search for the boundary between the two led to the...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2005
View online at AVOD
Summary: Although scientists have found evidence of volcanoes, tectonics, and rivers on Mars, only the Earth, which also has these features, currently sustains life. Why? Scientists have postulated that the answer somehow lies in the Earth's relationship to the Moon. Astronomers are now scanning the galaxy for other habitable planets with the same configuration as the Earth and the Moon.
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2007