Cool science experiment! Rainbow Roses... Get white of cream colored long stem roses. (Carnations work well too). Cut the stem according to the picture, you will then place 4 glasses of food color dyed water together. Put one piece of stem per color and allow the flower to soak up different colors.
This is an image you don't see every day... This amazing photo of an embryonic dolphin was taken using a combination of three-dimensional ultrasound scans, computer graphics and tiny cameras. (image from the National Geographic Documentary “Extraordinary Animals in the Womb”)