RadioLab did a podcast on the transformation from caterpillar to butterfly at http://www.radiolab.org/story/goo-and-you/ http://www.radiolab.org/story/goo-and-y

RadioLab did a podcast on the transformation from caterpillar to butterfly at http://www.radiolab.org/story/goo-and-you/ http://www.radiolab.org/story/goo-and-you/ . It might help in giving additional background on the topic.