Timothy Walker reveals how the work of Carl Linnaeus, Phillip Miller and John Ray unlocked the mysteries of the plant kingdom and created the science of botany.
Timothy Walker looks at how 17th century botanists made the connection between the growth of a plant and the energy from the sun - the process of photosynthesis.
Timothy Walker looks at how pioneer botanists unlocked the patterns found in different types of plants and opened the door to a new branch of science - plant genetics.
