The 2013 report warns that continuing rural poverty, persistent hunger around the world, growing populations, and mounting environmental concerns must be treated as a collective crisis. Urgent and far-reaching action is needed before climate change begins to cause major disruptions to agriculture, especially in developing countries. The report cites a number of trends that collectively suggest a mounting crisis, including increasing food prices, increased fertilizer use, and a decline in the agriculture growth rate. But most important of all are the persistent problems with hunger, malnutrition, and access to food. Almost 1 billion people currently suffer from hunger, and another 1 billion are malnourished, even though current global agricultural production already provides sufficient calories to feed a population of 12 to 14 billion.