Fifty years ago, Africa was home to just over 1.3 million elephants, but by 1990 the number had halved. Meanwhile in the span of a lifetime, the human population has more than doubled. In Levison Wood's 'The Last Giants', he explores the rapid decline of one of the world's favourite animals. Filled with stories from his own time spent travelling with elephants in Africa, the book is a passionate wake-up call for this endangered species we take for granted. 'The Last Giants' was written to inspire us all to act - to learn more and help save the species from permanent extinction.