Good unique science fair project.?

Question

okay well i need a good science fair porject for 8th grade it has to be very interesting NOT something like "which do most people enjoy more,coke or pepsi? "

i will pick best answer! =)

Answer 1

Well for the record I did which liquids damage teeth the most within 2 weeks. But there is energy of nuts, water purity(If you can traveL ALOT), which chemicals fume the most (which would help explain bottle tops), and of course their is chemicals that are detrimental to the crops (in other word which poisons kill plants quickest)

Answer 2

well you could prove random chance evolution wrong by showing getting a box of Lego's and say that when you shake it, they're all going to put themselves together. Thats what evolutionists believe, that in the beginning  a bunch of cells came together somehow and made the world. =]