Impact of global warming on agriculture and food security

The earths claimed have been relatively stable for thousand years. We know intuitively that its hot, humid and rainy in the Amazon and that corn grows well in the us Midwest. We know that at a particular altitude we should plant a crop during a certain week of the year because conditions for it are just right then. for most our memory as humans our claimed have closely oscillated around predictable patterns, and this has allowed as to feed ourselves and flours. When a stable claimed system is modified beyond its “tipping point” it gets out of balance and losses is equilibrium while the system reach around variability and uncertainty are the norm. This in essence, is the nature of challenge that we are not facing.