Extreme weather patterns are likely to become the norm. They wreck havoc in the developed work causing floods, droughts and fires. Here is a beautiful slide show of the 2011 Texas drought. Unpredictable weather patterns can be deadly in developing countries though. The desertification of Mali has deprived villages of their food sources and livelihoods. Food security is threatened and makes it difficult for subsistence farmers to plan ahead. New forms of crop can help and weather insurance is slowly becoming more widespread. The developing world, ultimately, will be hardest hit by climate change.