How tiny stones inside our heads tell us which way is up...
Why don't tooth-brushing and mouthwash really help? Why makes garlic so persistently stinky?
What is black and white and very smelly all over?
Why does our body sniff rather than smell things?
Female lemurs on contraceptives smell different to potential mates than ones that are not.
Why are snake's tongues shaped the way they are?
Sometimes it seems like snakes have a sixth sense. You may call their "sixth sense" the vomeronasal system.
New research suggests that burning a candle may be toxic.
Anosmia, the term for the lack of a sense of smell, affects over two million Americans. Learn more on this Moment of Science.