Press Association: Almost 300 nuns, monks and other clergy urged the Government to strengthen its commitment to tackle global warming as they demonstrated outside the Houses of Parliament. They also took their message to MPs and Environment Secretary Hilary Benn, arguing there is a moral case for raising the carbon emissions reduction target from 60% by 2050 to 80%. Organised by the Catholic Agency for Overseas Development (Cafod), they marched up to Parliament with placards saying "Stop …