The City Dark - Trailer
Preview: Season 25 Episode 3 | 2m 38s
Is darkness becoming extinct? When filmmaker Ian Cheney moves from rural Maine to New York City and discovers streets awash in light and skies devoid of stars, he embarks on a journey to America’s brightest and darkest corners, asking astronomers, cancer researchers and ecologists what is lost in the glare of city lights.
Aired: 07/05/12
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