One of the consequences of changes in climate such as drought is an impact on the soil structure and the agricultural infrastructure on which it sits. The Guardian posted an article a few days ago describing the impacts of continued massive pumping of groundwater in California on the surface topography, where land is sinking at the rate of up to 2 inches a month as groundwater is drawn down. The canals, bridges and other infrastructure in these areas are being undermined by the sinking land and will cost a lot of money to replace. You can read the article here.
At the same time, a warming Arctic is experiencing unprecedented melting of the permafrost. Since many structures are built on the permafrost, this is causing problems with infrastructure in those places. In addition, the melting permafrost releases extra carbon dioxide to the atmosphere, accelerating the trend towards rising CO2. You can read more about this here.
