Title says it. Problem is I don't know from which network it is. I remember watching this cartoon when I was younger, about 9+ years ago? It was an educational series about this family, where the youngest child would go to different family members each episode and ask them questions (biology, chemistry, physics ect.) and they would explain it to him. So.. for example, I remember once they shrank to the size of red blood cells and went to explore how they work and their job and so on. It was a long time ago and I don't remember much from it. Any ideas?