Nova Season 5 Episode 2 – The Green Machine

Aired : Jan 11 1978 | 35 Views |

Watch Nova season 5 episode 2 online for free. 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.