Topic: I really cannot find the correct answer, will you help me out?:-(

I apologize for off-topic, I am considering about creating an instructive website for college students. May possibly start with submitting interesting information just like"Babies are born without knee caps. They don't appear until the child reaches 2-6 years of age."Please let me know if  you know where I can find some related information such as right here

http://stevenrgerst.com/fhgbv/56/23838- … on.include
http://stevenrgerst.com/d1-tw/76/articl … 174/page/3