Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Food Crises and Political Instability in North Africa and the Middle
  East   Social unrest may reflect a variety of factors such as poverty, unemployment,
and social injustice. Despite the many possible contributing factors, the
timing of violent protests in North Africa and the Middle East in 2011 as well
as earlier riots in 2008 coincides with large peaks in global food prices. We
identify a specific food price threshold above which protests become likely.
These observations suggest that protests may reflect not only long-standing
political failings of governments, but also the sudden desperate straits of
vulnerable populations. If food prices remain high, there is likely to be
persistent and increasing global social disruption. Underlying the food price
peaks we also find an ongoing trend of increasing prices. We extrapolate these
trends and identify a crossing point to the domain of high impacts, even
without price peaks, in 2012-2013. This implies that avoiding global food
crises and associated social unrest requires rapid and concerted action.

11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph