The day that the food starts to run out in the world may come far more quickly than most of us imagine. At present, there are more than a billion people going hungry even though there is no shortage of food. The very poor don’t eat enough because they don’t have enough money. The underlying problem is one of social inequality, of the highly skewed distribution of financial resources in the world.
Over the next century much worse food shortages may emerge. The climate crisis is already arriving far more quickly than scientists expected and proving far more dangerous. For a while, many scientists believed that the increase in carbon dioxide in the atmosphere would be partly compensated for by an increase in plant growth, caused by the greater availability of CO2. But now it seems that carbon fertilisation, as it is called, will not happen or will happen far less reliably than was once imagined.
One of the most comprehensive models of the impact of climate change, carried out in 2007 by William R Cline, predicts that, without carbon fertilisation, crop productivity in the developing world is likely to decline drastically, by 21 per cent over the next 80 years. And these predictions may also be underestimates, as they haven’t taken into account all the so-called ‘positive feedbacks’ – the melting of the ice sheets in the Arctic and the Antarctic, the melting of the glaciers, the much greater frequency of forest fires, the growing water shortage and so on – which will make everything worse. Indeed, many of the nations that are scouring the world for arable land will have been warned by their own scientists that a world of dire shortages lies ahead.
Brilliant article on the social injustice of food. Summary: rich countries, realising they can't be self-sufficient to feed their growing populations, are grabbing land, mostly in Africa, to ensure their own "food security" (an awful phrase) at the expense of the world's poor.
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