Climate change is a global issue - from the point of view of the Earth's climate a molecule of CO2 emitted in Bejing is the same as a molecule emitted in Sydney.
Beside all this I think there was something personal being Muslim myself who lived in the west I felt that it was my obligation my duty to tell the truth about Islam. It is a religion that has a 700 million following yet it's so little known about it which surprised me.