Invasive species have been blamed for wiping out native populations. Conservationists face a hard choice: should they kill one species to save another? The answer is often yes. Nicola Davis explores this dilemma and asks whether there’s a more compassionate approach
For centuries, humans have introduced new species to new territories. Sometimes this isn’t a problem but, in other instances, the newbies compete with the locals for food, bring disease or eat too many of the natives. This causes an ecological imbalance and it’s an issue conservationists have been trying to fix. Often the solution is to kill the invasive species.