This early 2013 's severe weather events have led to low yields in grain exporting nations . Kansas prairie farmer Oxfam says extreme weather events are becoming much more extreme . Aid group Donn Teske believes there may be another spike in food prices in year and longer term volatility . Some countries like Kansas are looking for alternative staple crops such as cassava .
This year 's severe weather events have led to low yields in grain exporting nations . Kansas prairie farmer Donn Teske says extreme weather events are becoming much more extreme . Aid group Oxfam believes there may be another spike in food prices in early 2013 and longer term volatility . Some countries like Nigeria are looking for alternative staple crops such as cassava .