Why we have two nostrils instead of one big hole

Our nostrils share the workload like coworkers on rotation. The post Why we have two nostrils instead of one big hole appeared first on Popular Science.

If you close one eye or put a finger to your ear, theres an immediate sense of loss. Two eyes help us see the world while two ears enable us to locate sounds. But theres not the same dramatic sense o… [+5627 chars]

Autores: Sarah Philip