The discovery of chloroplast | Botany: A Blooming History
Timothy Walker explains how Julius von Sachs discovered where starch was made in a plant, and how new microscopy techniques let him see inside plant cells, where he found chloroplasts.Tweet
Photosynthisis | Bitesize Science
Photosynthesis is essential to life on this planet.
S04E06 | Bang Goes the Theory
Liz Bonnin looks at the controversial science of genetically modified crops in Hawaii, while Dallas tries to remedy Jem's dust allergy by making him eat worms.