But some things are just wrong, however many jobs they provide and however much money they make for their stakeholders. There’s a reason the whaling industry was shut down in Australia in the 1970’s. The same applies to the tobacco industry in the 2000’s (which at its height employed about the same amount of people as the Salmon industry does today.) Values change with time.

In the realm of environmental activism, innovation often springs from the simplest ideas. Samuel McLennan, the founder of Project Interrupt, epitomises this ethos. His ambitious project involves sailing a raft up the coast of Australia, constructed entirely from waste materials collected from Tasmania's shores.