The disposal of human faces from the world's megacities is expensive and hazardous to health. But new technologies have emerged that mean we can use what we flush away to make electronic goods, fuel our buses and even bring huge health benefits, discovers KURT HOLLANDER.
Silver, indigenous Huichol communities and the peyote they venerate have co-existed in Wirikuta, northern Mexico for thousands of years, writes Kurt Hollander. But it's become an increasingly troubled relationship, one that illustrates the deepest conflicts of Mexican society. The region is protected as a UNESCO Natural Sacred Area, but foreign mining companies are determined to exploit vast concessions that pose severe threats to the fragile landscape, its inhabitants and their ancient culture.
The world's demand for protein will continue to rise, even as the environmental impacts of meat production become clearer. Could turning to commonly eaten insect species be the answer?
