NOVA

Season 4 Episode 20

Green Machine (The)

Aired Wednesday 9:00 PM Jan 11, 1978 on PBS
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Green Machine (The)
AIRED:
Botany is a neglected science and plants are all around us, but unfamiliar. NOVA examines our state of knowledge of how plants work: growth hormones, responses to light and shade, photosynthesis, root mechanisms and twining responses.

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