Nova1974 | TV Show

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PBS's premier science-documentary series, which has won six Peabody Awards and more than 20 Emmys (four in 2002 alone) since its 1974 debut. `Nova' clearly, and often engagingly, `demystifies' a vast range of science, technology and history topics---past a (more…)

Premiered: March 3, 1974

Rating: None

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Season 4, Episode 4 The Sunspot Mystery

First Aired: February 2, 1977

"The Sunspot Mystery" examines the way storms on the sun may affect the earth's weather. Noting that sunspots seem to follow 11-year cycles, the report traces scientists' efforts to link these to droughts in the Midwest. One theory examined states that a lack of sunspot activity from 1645 to 1715 caused the earth to cool considerably.

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Previous Episode

What Price Coal?

Season 4, Episode 3

January 19, 1977

Next Episode

The Plastic Prison

Season 4, Episode 5

February 9, 1977

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