Some have a higher level of intelligence than most computers. Others have hydraulic systems capable of cracking concrete. Some live on their nerves while others take all they need from the soil, or from water, or from the air around them. Some live for just a brief season, others for a thousand years. They contain springs and levers, pumps and pipework, chemical factories, sensors, tracking devices and clocks. What are they? Plants. The most important, least understood, and most taken-for-granted of all living things. In this remarkable book, Professor Wilkins reveals a variety of form and function, of behaviour, and of physical and chemical engineering to rival anything in the animal kingdom. Straightforward text, profusely illustrated with diagrams, artwork, and specially commissioned photographs.