Artificial meat grown in vats may be needed if the 9 billion people expected to be alive in 2050 are to be adequately fed without destroying the earth, some of the world’s leading scientists report today, reports Telegraph.co.uk.
But a major academic assessment of future global food supplies, led by John Beddington, the UK government chief scientist, suggests that even with new technologies such as genetic modification and nanotechnology, hundreds of millions of people may still go hungry owing to a combination of climate change, water shortages and increasing food consumption.
In a set of 21 papers published by the Royal Society, the scientists from many disciplines and countries say that little more land is available for food production, but add that the challenge of increasing global food supplies by as much as 70% in the next 40 years is not insurmountable.
Several studies suggest farmers will be up against environmental limits by 2050, as industry and consumers compete for water. One group of US scientists suggests that feeding the 3 billion extra people could require twice as much water by then. This, says Professor Kenneth Strzepek of the University of Colorado, could mean an 18% reduction in worldwide water availability for food growing by 2050.
“The combined effect of these increasing demands can be dramatic in key hotspots [like] northern Africa, India, China and parts of Europe and the western US,” he says.
Many low-tech ways are considered to effectively increase yields, such as reducing the 30-40% food waste that occurs both in rich and poor countries. If developing countries had better storage facilities and supermarkets and consumers in rich countries bought only what they needed, there would be far more food available.