The connection between climate chaos and food productivity seems to be a subject people do not like to talk about or even understand completely. This video is worth watching in that it explains very clearly the significance for all of us.
http://www.climatechange-foodsecurity.org/
Sadly, the risks and impacts of global climate change on food security are not on the agenda of UN climate change discussions or negotiations. Most of us aren't aware that today with already committed temperature increases all populations in all regions are losing future in food production. Food production globally and then in all regions will stop increasing and start decreasing. Certainly, the public isn't aware of this a dire emergency!
Finally, there is no risk assessment of food security under global warming and climate change. This site uses the documented effects of climate change and crop yields to give an indication of the risks. This should make us all think, be proactive and take action in pushing our governments to rapidly reduce emissions !
http://www.climatechange-foodsecurity.org/overview.html
So of course with all the information available what should one do? I suggest growing a significant amount of your own food if it is possible in your situation is a helpful and healthy response. It is without doubt food is going to be more expensive to everyone and there are going to be shortages and access matters. Growing your own food has massive benefits for the self... and brings food security into the conversation and makes it an important element of family life.
It is never too late to learn something new.
May i also suggest subscribing to this you tube channel.
http://www.climate-change-emergency-medical-response.org/ignored-climate-science.html
Ignored Climate ScienceOften ignored but essential aspects of global climate science explain why today's global warming of 0.78ºC is actually twice what we think it is. Published research indicates it is three times today's increase or 2.4ºC. (Ramanathan, Feng, On Avoiding Dangerous Interference Climate Interference with the Climate System. 2008).Today's level of greenhouse gases in the atmosphere thencommits the world to a warming of at least 2ºC by 2100 which is beyond dangerous by any definition.(confirmed by computer models, 2007/2008).