Blaming leaders in America and abroad for not doing enough to combat climate change, former United Nations Secretary-General Kofi Annan said continued failure to tackle the problem will result in worldwide hunger, social unrest and political turmoil.

“Without action at the global level to address climate change, we will see farmers across Africa – and in many other parts of the world including here in America – forced to leave their land,” the 2001 Nobel Peace Prize winner told a crowd of about 1,400 people at Stanford’s Memorial Auditorium on Thursday. “The result will be mass migration, growing food shortages, loss of social cohesion and even political instability.”

Citing numbers from the World Bank, Annan said rapidly rising food prices since 2010 have “pushed an additional 70 million people into extreme poverty.” He called a lack of food security for nearly 1 billion of the world’s population “an unconscionable moral failing” that is also a stumbling block to a strong international economy.

“It affects everything from the health of an unborn child to economic growth,” he said.

Annan’s talk, “Food Security Is a Global Challenge,” was delivered as part of a daylong conference on global underdevelopment sponsored by Stanford’s Freeman Spogli Institute for International Studies. The event drew the world’s leading experts in the field and featured panel discussions that explored the connections between global security and food supplies, health care and governance. Keynote speeches were delivered by Annan and Jeff Raikes, CEO of the Bill & Melinda Gates Foundation. Former Secretary of Defense Robert Gates also planned to deliver a talk to a private audience.

The conference marked the launch of FSI’s Center on Food Security and the Environment.

“With this facility, and the creative thinkers and inquisitive minds for which Stanford is famous, you are well-equipped to undertake research which advances our knowledge and helps to shape our response to the many global challenges we face,” Annan said. “And with the resources at your disposal, you also have the capacity to actively engage to influence policy, implement solutions and thus improve the lives of the most vulnerable people on the planet.”

Annan also lauded government initiatives such as America’s Feed the Future program that focus on alleviating global hunger. He recently met with Secretary of State Hillary Clinton, Secretary of Agriculture Tom Vilsack and Raj Shah, head of the U.S. Agency for International Development, to discuss ways to address food insecurity.

“If we pool our efforts and resources, we can finally break the back of this problem,” he said.

But he challenged wealthier nations to do more than pay lip service to the problem.

“We need to make sure that promises of extra support from richer countries are kept and involve fresh funds rather than the repackaging of existing financial commitments,” he said.

Annan, who is the chair of the Kofi Annan Foundation, the Africa Progress Panel, and the Alliance for a Green Revolution in Africa, said Africa represents both the greatest problem and the greatest promise when it comes to food security.

The continent is home to 60 percent of the world’s uncultivated arable land, but cannot produce enough food to feed its own people, he said. But if Africa can grow just half the world’s average yield of staple crops like wheat, corn and rice, it would end up with a food surplus.

Transforming Africa into one of the world’s biggest crop producers will take more than supporting farmers, he said. It entails sound environmental stewardship.

 “I hope this is an area where the Center on Food Security and the Environment can make a major contribution to finding solutions,” Annan said.

Without those solutions, the future is bleak.

In Sub-Saharan Africa, where global warming brings the threat of persistent drought, current crop production is expected to be cut in half by the end of the century and 8 percent of the region’s fertile land is expected to dry up.

“Those arguing, here and elsewhere, for urgent action and a focus on opportunities to green our economies still find themselves drowned out by those with short-term and vested interests,” Annan said. “This lack of long-term collective vision and leadership is inexcusable. It has global repercussions, and it will be those least responsible for climate change – the poorest and most vulnerable – that will pay the highest price.”

Annan's speech was sponsored by FSI, Stanford in Government and the Stanford University Speakers Bureau.

Over much of the world, the growing season of 2050 will probably be warmer than the hottest of recent years, with more variable rainfall. If we continue to grow the same crops in the same way, climate change will contribute to yield declines in many places. With potentially less food to feed more people, we have no choice but to adapt agriculture to the new conditions.

To some extent, adaptation can be done by moving crops to more favourable areas and by agronomic tweaks. But that will almost certainly not be enough. We will have to give crops a genetic helping hand, infusing them with new genes to allow them to better cope with new climates, and the new pests and diseases they will bring. Where are these genes going to come from?

Some of them could come from completely unrelated organisms, to be spliced into their new genomic homes using advanced biotechnologies. However, there is significant public resistance to that strategy, and it is still unclear how effective genetically modified crops are at coping with heat and drought. We cannot risk putting all our eggs in that basket.

Another source of genes for crop improvement are traditional heirloom varieties, often called landraces, which are still grown by subsistence farmers in many parts of the world, although they are fast disappearing. Large collections of their seeds have been made over the years, creating genebanks that are scoured by plant breeders searching for crop diversity, and which helped spur the Green Revolution in agriculture from the late 1960s.

But there’s a limit to the diversity found in domesticated species, imposed by domestication itself. Cultivated species usually contain a fraction of the genetic diversity found in their closest wild relatives — a legacy of the ‘domestication bottleneck’. Ancient farmers selected relatively few plants from the progenitors of modern crops, in a limited number of places. Although there has been continuous gene flow between crops and their wild relatives where they coexist, a lot of genetic diversity has been lost as agriculture has developed.

We know that the ‘lost’ genetic diversity includes genes for resistance to high temperatures and drought, and to pests and diseases, as well as taste and nutritional composition, and even yield. If there was ever a time to go back and reclaim this diversity, that time is now. In fact, it is already being used more than many people realize. For instance, there is probably no widely grown rice cultivar that does not have some genes obtained by breeders from its wild relatives. But we could be making much more effective, and systematic, use of the reservoir of diversity our Neolithic ancestors left behind.

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Four decades ago, farmers in Prabhu Pingali’s small eastern-Indian village began planting a new rice variety known as IR8. The high-yielding strain dramatically increased the productivity of rice cultivation in the region. Record harvests and profits allowed Pingali’s family to send their son to school and then to college, launching him on a path that led to his current position as Deputy Director of Agricultural Development at the Bill and Melinda Gates Foundation.

“I think of myself as being here today because of what the Green Revolution did,” said Pingali, speaking at the Center on Food Security and the Environment’s Global Food Policy and Food Security Symposium series.

Pingali’s story, and many others like it, came about as a result of the rapid advances in agricultural technology that characterized the “Green Revolution” of the 1960s and 1970s. Agricultural scientists from the International Rice Research Institute and the International Maize and Wheat Center worked aggressively to bring modern farming techniques, including high-yielding crop varieties, to the developing world.

The first Green Revolution proved that, “innovation, technological change, and just plain old human ingenuity” can overcome seemingly insurmountable obstacles to global food security.

Their efforts sparked a surge in agricultural productivity and incomes that lifted millions of small farmers out of poverty and dispelled widespread fears of famine in Asia’s developing countries. Pingali cited a 2003 study that found that today’s global per capita calorie consumption would be nearly 15 percent lower, and child malnutrition 6-8 percent higher, had the Green Revolution not occurred.

Production surpluses also exerted downward pressure on global food prices, increasing the purchasing power of poor food buyers in both urban and rural areas.

But even direct beneficiaries, including Pingali, acknowledge the Green Revolution’s unintended consequences. “As an Indian, I feel we could have done a lot better.”

Pingali noted that the Green Revolution largely bypassed Sub-Saharan Africa, home to some of the world’s most food-insecure populations. Unlike the developing nations of Eastern Asia, he said, most African countries still lack the market infrastructure to support rapid expansion of the agricultural sector. Low population densities, resulting in weak local food demand, and insufficient government support for agricultural development, have further inhibited productivity gains in these countries.

Additionally, many African farmers rely primarily on minor “orphan” crops, such as cassava, rather than on the global staple grains – rice, wheat, and maize – that received most attention from Green Revolution scientists. Although modern crop breeders have begun to develop high-yielding orphan crop varieties, research in this area remains sparse. Major breakthroughs and significant yield gains may not occur for decades.

Speaking after Pingali, University of Minnesota Professor Philip Pardey reiterated the Green Revolution’s welfare-enhancing consequences. Pardey provided a more rigorous quantitative analysis, presenting data that showed that yields of major cereal crops more than doubled, and real food prices fell by over 50 percent, between 1960 and 2005.

However, Pardey expressed concern about an apparent slowdown in progress since the end of the 20^th century. He cited declining yield growth rates, and the food price spikes of 2008-2010, to emphasize the need for a renewed commitment to agricultural science and food security policy. 

Both Pingali and Pardey also drew their audience’s attention to the unevenness of the Green Revolution’s benefits. The yield gains of the 1960s and 1970s, Pardey said, were accompanied by increasing spatial concentration of food production, as some regions and countries benefited disproportionately from emerging agricultural research.

Even if scientists do develop improved crop varieties for Africa, Pingali said, increasingly stringent intellectual property laws could inhibit their distribution to poor rural farmers. Up until the 1990s, issues of intellectual property had little bearing on agricultural development, permitting the wide distribution of crop varieties. Now the networks that fostered the Green Revolution are in danger of disappearing because of restrictions on the transfer of intellectual property. What was once a public endeavor is increasingly a private concern, and Pingali expressed uncertainty about how private capital should be harnessed to help the rural poor.

Meanwhile, looming challenges such as population growth and global climate change will further complicate the future path of agricultural development.

Like Pardey, Pingali warned against complacency. Though the advances of the 1960s and 1970s were impressive, he concluded, researchers will need to “reach beyond the low-hanging fruit” to continue to increase productivity – intensifying the study of orphan crops, for example, and developing new crop strains that will grow well under extreme climate conditions.

According to Pingali, the first Green Revolution proved that, “innovation, technological change, and just plain old human ingenuity” can overcome seemingly insurmountable obstacles to global food security. Four decades later, agricultural development faces a new round of challenges. Despite these obstacles, Pingali concluded on a note of confidence, arguing that the Green Revolution can overcome problems that currently seem intractable. “We’ve done it before,” he declared, “and I’m sure we can do it again.”