Christian Today: Christian environmental charity Operation Noah is holding its first ever ‘Oil Fast’ on Sunday. It is inviting church communities to hold off from using oil throughout the day as part of its “Exodus from carbon”. The Oil Fast is being held in response to the Deepwater Horizon disaster in the Gulf of Mexico, which Operation Noah said had made the world more aware of the wider costs of its dependence on oil. The concept for the Oil Fast is rooted in the Christian belief …