This month's Tax Justice Network's Taxcast takes a look at why development money is being invested in developing countries via tax havens and the under-reported elements of the tensions between Spain and Britain over the territory of Gibraltar. Also: tax and the environment: making the polluter pay instead of paying the polluter. The Taxcast investigates the Carbon Tax in British Columbia, Canada.

The Taxcast is produced by @Naomi_Fowler and is also available on iTunes.