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Geothermal energy tapping the earth's heat /

This Science Screen Report looks at a clean and renewable energy source that is steadily gaining scientific acceptance: hot dry rocks, otherwise known as enhanced geothermal systems. The program shows how masses of heated granite approximately 3 miles underground can be accessed with advanced drilli...

Full description

Other Authors: Allegro Productions (Firm), Films for the Humanities & Sciences (Firm), Films Media Group.
Format: Video
Language: English
Published: New York, N.Y. : Films Media Group, [2006], c2000.
Physical Description: 1 streaming video file (15 min.) : sd., col., digital file + instructional materials (online)