Scatological science: how poo analysis could help save endangered species

Three separate species of banded langur have been identified after DNA analysis of their faeces, paving the way for targeted conservation strategies

Across the world, conservationists, scientists and volunteers are racing to save thousands of endangered species. And for some, their efforts have not been wasted. A recent report found that conservation programmes have saved several bird and mammal species from extinction in recent decades.

But the numbers of many data deficient species and sub-species continue to dwindle - and how do you save a species if it hasn't even been recognised?