I am sorry for off-topic, I'm considering about making an interesting web site for students. Will possibly begin with submitting interesting facts like"Butterflies can see red, green, and yellow."Please let me know if  you know where I can find some related facts like here
 
http://moitruongkhangthinh.com/stuff-videos-with-appropriate-toxins/
http://spirithealthsynergies.com/college-students-get-mymaster-how-does-someone/