= climate change related currency used in Western Australia
"A Boya is created by our schools and community groups whenever we work together to reduce greenhouse pollution in the atmosphere.
Our programme is simple:
1.Our school or community decides to reduce climate pollution by a certain number of tonnes.
2. We work together to collect data and estimate the pollution reductions we have achieved.
3. We use an Upside-down thermometer to track our progress based on how much we have reduced the Earth's temperature.
4. Kids and adults share their story of climate leadership by printing it on Boya.
When we trade Boya, or accept them at our businesses, we are supporting each other in creating a better future for all of us.
As Boya move around from person to person they carry the story of positive community action that will further inspire ourselves and others." (http://www.maiamaia.org/?fref=gc&dti=145538675490320)