This is brilliant!
Can we change human behaviour by making it fun to do?
I think yes :)
The next one is my favourite:
and for those of you who can't get enough - there's loads more on this website :)
What else should be made fun to do?
Saving the polar bears? Protecting the rainforest? Doing the dishes? Cleaning up your room? Recycling?
There's work to do :D