Математичний аналіз і диференціальні рівняння вивчаю САМ

I apologize for off-topic, I'm thinking about creating an instructive web site for college kids. Will probably start with submitting interesting facts such as"Possums have one of the shortest pregnancies at 16 days. The shortest human pregnancy to produce a healthy baby was 22 weeks, 6 days -- the baby was the length of a ballpoint pen."Please let me know if you know where I can find some related information and facts such as right here

www.behtaoil.com/?p=6941