Some people believe that vegetarian diets will be able to help world hunger. This is because land that is devoted to crop production tends to be more efficient and produce more than the equivalent space that is dedicated to animal husbandry. That said, the world already produces more than enough food to sustain the human population. Therefore, world hunger can only be explained adequately by also factoring in food distribution problems and poverty. Some people now think that more vegetarians around the world will help in the fight against climate change since less deforestation will occur and fewer animals will be grown, something which leads to methane escaping into the atmosphere.