“Although population growth has slowed for the world as a whole, this report reminds us that some developing countries, especially in Africa, are still growing rapidly,” said the Under-Secretary-General for Economic and Social Affairs, Wu Hongbo in a press release on the report.

The report, World Population Prospects: the 2012 Revision, notes that the population of developed regions will remain largely unchanged at around 1.3 billion from now until 2050. In contrast, the 49 least developed countries are projected to double in size from around 900 million people in 2013 to 1.8 billion in 2050.

Compared to previous assessments of world population trends, the new projected total population is higher, mainly due to new information obtained on fertility levels of certain countries. For example, in 15 high-fertility countries of sub-Saharan Africa, the estimated average number of children per woman has been adjusted upwards by more than 5 per cent.

“In some cases, the actual level of fertility appears to have risen in recent years; in other cases, the previous estimate was too low,” said the Director of the Population Division in the UN’s Department of Economic and Social Affairs, John Wilmoth, during a press conference in New York.

“While there has been a rapid fall in the average number of children per woman in large developing countries such as China, India, Indonesia, Iran, Brazil and South Africa […] rapid growth is expected to continue over the next few decades in countries with high levels of fertility such as Nigeria, Niger, the Democratic Republic of the Congo, Ethiopia and Uganda but also Afghanistan and Timor-Leste, where there are more than five children per woman.”

Mr. Wilmoth added that changes in fertility rates over the next few decades could have major consequence for population size, structure and distribution in the long run.

The report notes that India is expected to become the world’s largest country, passing China around 2028, when both countries will have populations of 1.45 billion. After that, India’s population will continue to grow and China’s is expected to start decreasing. Meanwhile, Nigeria’s population is expected to surpass that of the United States before 2050.

Europe’s population is projected to decline by 14 per cent, the report states, and Mr. Wilmoth warned that the continent is already facing challenges in providing care and support for a rapidly aging population.

Overall, life expectancy is projected to increase in developed and developing countries in future years. At the global level, it is projected to reach 76 years in the period 2045-2050 and 82 years in 2095-2100. By the end of the century, people in developed countries could live on average around 89 years, compared to about 81 years in developing regions.

The report’s figures are based on a comprehensive review of available demographic data from 233 countries and areas around the world, including the 2010 round of population censuses.

Global food prices soared by 10 percent in July

From June to July, maize and wheat rose by 25 percent each, soybeans by 17 percent, and only rice went down, by 4 percent. Overall, the World Bank’s Food Price Index, which tracks the price of internationally traded food commodities, was 6 percent higher than in July of last year, and 1 percent over the previous peak of February 2011.

“Food prices rose again sharply threatening the health and well-being of millions of people,” said World Bank Group President Jim Yong Kim. “Africa and the Middle East are particularly vulnerable, but so are people in other countries where the prices of grains have gone up abruptly.”

Overall, food prices between April and July continued the volatile trend observed during the previous 12 months, which halted the sustained increases between mid-2010 and February 2011. Prices increased in April, came down in May and June, and sharply increased in July.

Sharp domestic price increases have continued in this quarter, especially in Africa. Sub-Saharan Africa, in particular, experienced the highest price increases in maize, including 113 percent in some markets in Mozambique. Meanwhile, the Sahel and eastern Africa regions experienced steep price increases of sorghum: 220 percent in South Sudan, and 180 percent in Sudan, for instance.

According to Food Price Watch, weather is the critical factor behind the abrupt global price increases in July. The drought in the U.S. has resulted in vast damages to the summer crops of maize and soybeans, for which the country is the world’s largest exporter. Meanwhile, the dry summer in the Russian Federation, Ukraine, and Kazakhstan has contributed to

Droughts have severe economic, poverty and nutritional effects. In Malawi, for instance, it is projected that future severe droughts observed once in 25 years could increase poverty by 17 percent, hitting especially hard rural poor communities. And in India, dismal losses from droughts occurred between 1970 and 2002 to have reduced 60-80 percent of households’ normal yearly incomes in the affected communities.

“The World Bank has stepped up its support to agriculture to its highest level in 20 years, and will keep helping countries respond to the food price hikes,” continued Kim.

According to Food Price Watch, prices are expected to remain high and volatile in the long-run as a consequence of increasing supply uncertainties, higher demand from a growing population, and the low responsiveness of the food system.