Comment Re:Bangladesh crop yields up, not down (Score 2) 210
To put immigration on climate change is a far stretch, the relationship is more of a butterfly effect. To completely ignore climate change as a factor would be a mistake. Climate change can drive significant agricultural changes. Significant change to crop yield, be it negative or lateral disrupts a lot of families and individuals. By lateral crop yield change, I mean the change from one crop to another. Ex: A farmer, who has invested to grow wheat, may fail and his farmland may be acquired by a company that farms potatoes. The company is better suited to handle the changing market and growing dynamics than the individual farmer, so the company capitalizes on it and the farmer is displaced. Cumulative individual disruption leads to unrest.
You can't reasonable quantify how much climate change contributed, If climate change didn't happen, perhaps issues would not have compounded and things would have gotten better. Or perhaps it would have happened anyway. Thus the butterfly affect. Unless you're in a time paradox, you'll never know.
I think the point most people miss is that cumulative individual disruption leads to unrest. The rate and the severity of that disruption affects the severity of the unrest. People adjust to disruption, but when the rate of disruption is too fast and too severe, society reaches a tipping point and falls off a cliff.