The world food scene is turning grimmer. While the UN is warning that food prices would continue to soar for another two years, a senior UK official speaks of a serious worldwide scarcity by 2050. Demand is far outstripping our ability to produce.
New chief science adviser to the British government, Professor John Beddington, says the crisis could be as serious as climate change and might hit sooner.
The world's 6.5 billion population is expected to reach nine billion by 2050.
This, combined with growing consumption as poverty is alleviated, will put huge pressure on food supplies, he said.
Professor Beddington said there would be a huge knock-on effect as economic growth lifted people out of poverty in countries like China and India.
He told BBC News: "Something is actually happening out there for very good reasons, namely that poverty is being alleviated.
"To some extent we are actually trying - and properly so - trying to eliminate poverty. Now as poverty is eliminated, big changes in consumer demand occur."
Climate change is expected to worsen the problem, reducing rainfall and affecting crop growth.
Added to this, efforts to tackle climate change - by using biofuels instead of fossil fuels - are taking more land away from food production.
Professor Tim Lang of City University has welcomed the chief scientist's effort to draw attention to a relatively neglected issue.
He told BBC News: "I welcome it, that a chief scientist would do this is a sign that he's expressing what a lot of us out there feel is a very big shift in the food economy.