More and more rubbish is put in landfill every year. Can rubbish tips and industrial sites be modified to help wildlife thrive in an increasingly crowded and consumerist world? The UK produces more than 100 million tonnes of rubbish annually, including 15 million tonnes of food. Much of this ends up in landfill; how can these sites be used to help wildlife? This week's field report comes from Essex, from a reclaimed landfill site which is now a wildlife haven. But is this a one-off or can it be replicated around the world? Monty Don explores the world of waste and wildlife in a world where human population is growing and consumerism increasing.