They include altered ecosystems and habitats; detrimental impacts on agriculture, potentially leading to food shortages; and more and longer lasting weather extremes and natural disasters, along with numerous risks to society. Therefore, the regional estimates do nc add up to the total. Data collected over two decades show that the growth in global emissions has accelerated, rising 10 per cent from 1990 to 2000 and 38 per cent from 2000 to 2012, driven mostly by growth in the developing regions.