What defines a species? Inside the fierce debate that's rocking biology to its core
![What defines a species? Inside the fierce debate that's rocking biology to its core](https://cdn.mos.cms.futurecdn.net/7SLdjKNqpaibeMcnfC2CAT.jpg)
The question of what defines a species has vexed scientists across the ages, particularly in conservation, where decisions require a firm understanding of biodiversity.