Nocturnal tobacco hawkmoths (Manduca sexta) use their keen sense of smell to find nectar rich flowers or plants on which to lay their eggs. Now, researchers at the Max Planck Institute for Chemical Ecology are looking to answer the question of how the moths distinguish between different smells.

With so many smells in the world, how can moths pick out those that are essential for their lives from those unnecessary whiffs?

— Read more in Tobacco hawkmoths are incredibly sensitive to important smells at Earth.com.