An increase in extreme weather events driven by climate change. will create widespread food insecurity in coming months and years, becausecombined with increasing conflicts, trade disputes, and overutilization of natural resources. All these factors will create a perfect storm affecting both production, supply and people's ability to buy food. Climate change is the greatest long-term threat to global food security, says Mario Herrero, Chief Research Scientist in Agriculture and Food at Australia’s Commonwealth Scientific and Industrial Research Organization. The average annual number of extreme weather events, such as droughts and unusual floods, has more than doubled since the early 1990s, to more than 200. Meanwhile agricultural seasons are becoming destabilized or shortened.