Title from web page. "Subtitles are a function of the disc and serve the same purpose as closed captions. Described video (for the visually impaired) is available as a secondary audio track"--Container Narrator, Miles O'Brien. Originally broadcast as an episode of NOVA on the PBS network. Wide screen.
Summary:
Electric cars seem increasingly likely to replace gas-guzzling vehicles. Could a new generation of emission-free electric planes do the same to the polluting airliners in the skies - a major step in the fight against climate change?
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.