Famines are by and large MOSTLY man made. They are not fixed by hybrid solutions.
http://en.wikipedia.org/wiki/Famine
Noting that modern famines are invariably the outcome of misguided economic policies, political design to impoverish or marginalize certain populations, or deliberate acts of war, political economists have investigated the political conditions under which famine is prevented. Amartya Sen states that the liberal institutions that exist in India, including competitive elections and a free press, have played a major role in preventing famine in that country since independence. Alex de Waal has developed this theory to focus on the "political contract" between rulers and people that ensures famine prevention, noting the rarity of such political contracts in Africa, and the danger that international relief agencies will undermine such contracts through removing the locus of accountability for famines from national governments.
Causes of famine
The fundamental cause of famine is the exceeding of carrying capacity for a people of a given region to produce enough food. Famines can be exacerbated by poor governance or inadequate logistics for food distribution. Modern famines have often occurred in nations that, as a whole, were not initially suffering a shortage of food. The largest famine ever (proportional to the affected population) was the Irish Potato Famine, which began in 1845 and occurred as food was being shipped from Ireland to England because the English could afford to pay higher prices.
The largest famine ever (in absolute terms) was the Chinese famine of 1959–60 that occurred as a result of the Great Leap Forward. In a similar manner, the 1973 famine in Ethiopia was concentrated in the Wollo region, although food was being shipped out of Wollo to the capital city of Addis Ababa where it could command higher prices. In contrast, at the same time that the citizens of the dictatorships of Ethiopia and Sudan had massive famines in the late-1970s and early-1980s, the democracies of Botswana and Zimbabwe avoided them, despite having worse drops in national food production. This was possible through the simple step of creating short-term employment for the worst-affected groups, thus ensuring a minimal amount of income to buy food, for the duration of the localized food disruption and was taken under criticism from opposition political parties and intense media coverage.
Because herding and agriculture allow for greater population, both in numbers and in density, the failure of a harvest or the change in conditions, such as drought, can create a situation whereby large numbers of people live where the carrying capacity of the land has dropped radically. Famine is then associated primarily with subsistence agriculture, that is, where most farming is aimed at producing enough food energy to survive. The total absence of agriculture in an economically-strong area does not cause famine; Arizona and other wealthy regions import the vast majority of their food.
Disasters, whether natural or man-made, have been associated with conditions of famine ever since humankind has been keeping written records. The Torah describes how "seven lean years" consumed the seven fat years, and "plagues of locusts" could eat all of the available food stuffs. War, in particular, was associated with famine, particularly in those times and places where warfare included attacks on land, by burning fields, or on those who tilled the soil.
As observed by the economist Amartya Sen, famine is usually a problem of food distribution and poverty, rather than an absolute lack of food. In many cases, such as the Great Leap Forward, North Korea in the mid-1990s, or Zimbabwe in the early-2000s, famine can be caused as an unintentional result of government policy. Famine is sometimes used as a tool of repressive governments as a means to eliminate opponents, as in the Ukrainian famine of the 1930s. In other cases, such as Somalia, famine is a consequence of civil disorder as food distribution systems break down.
There are a number of ongoing famines caused by overpopulation, loss of arable land, war or political intervention.
Today, nitrogen fertilizers, new pesticides, desert farming, and other agricultural technologies are being used as weapons against famine. These have increased crop yields, but there are signs as early as 1995 that not only are these technologies reaching their peak of assistance, but they may now be contributing to the decline of arable land (e.g. persistence of pesticides leading to soil contamination and decline of acreage available for farming. Developed nations have shared these technologies with developing nations with a famine problem, but there are ethical limits to pushing such technologies on lesser developed countries.
This is often attributed to an association of inorganic fertilizers and pesticides with a lack of sustainability. In any case, these technological advances might not be influential in those famines which are the result of war. Similarly so, increased yield may not be helpful with certain distribution problems, especially those arising from political intervention.
