<p>Professor Kathy Willis, director of science at the Royal Botanic Gardens Kew, with the final episodes of her new history of our changing relationship with plants</p><p>Kathy Willis examines how the technology that helped map whole genomes in plants and animals was to revolutionise the classification of flowering plants; the evolution of our rainforests as revealed by DNA fingerprinting; plants as essential regulators of our planet's atmospheric carbon and water cycles; how green spaces and ecosystems have a positive effect on our health and well being; the future role of plants as providers of food to feed the planet's growing population.</p><p>Producer Adrian Washbourne.</p>
