What is to thank for the evolution of the mammal brain? Thank the fact that you smell!
We've been talking a lot about evolution and there has been a little discussion as to brain evolution. New research has been done to show that mammal brains probably evolved for better smelling ability. They say that the smell centers of the brain evolved first. So, feel good about the fact that you all smell and that the history of you smelling (in your distant evolutionary past) has allowed for your well-evolved brain!
