Imogen: Mummy, I'm going to save the planet.
Me: That's great to hear. How will you do it?
Imogen: Well, I'm going to find all the white dandelions and blow them all and then they'll all grow into more yellow dandelions and then they'll be white dandelions which are the most beautiful of all. And Mummy, more plants and flowers will save the planet.
Me: It sounds like you've thought a lot about this.
Imogen: Yes, and even I know that my plan has no carbon footprint.