NOVA - The Green Machine

Seizoen: 4 - Aflevering: 20 / 76 - Eerst uitgezonden: 11 januari 1978 - Episode ID: 384627

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.