A lack of consensus among researchers and policymakers over how to define “environmental security,” “national security,” and “human security” complicates discussions of the security implications of environmental and demographic change, assert Robert Mcab and Kathleen Bailey in “Latin America and the debate over environmental protection and national security,” published recently in the Defense Institute of Security Assistance Management Journal. A shortage of theoretical and empirical evidence makes proving the existence of environment-demography-security linkages difficult. Nevertheless, argue the authors, “given the relatively fragile nature of many Latin American economies, accurately addressing these threats is imperative for economic and social stability and security.”

Latin America’s rural environments face severe threats, including deforestation, land degradation, erosion, and water scarcity and pollution. “Human-induced land degradation and water shortages directly affect economic sufficiency in many rural areas,” write the authors. Another environmental cause of insecurity and violence—in Latin America and elsewhere—is land distribution. Inequitable land distribution in El Salvador, Latin America’s most densely populated country, was one of the causes of the country’s 18-year civil war. The 1992 peace agreement that ended the war set up a plan for land redistribution, although some question how fully it has been implemented.

Demographic shifts can also destabilize communities and regions: Migration can generate tensions and violence between newcomers and established populations, as has occurred in the disputed rural region of San Juan, which lies between Nicaragua and Costa Rica. Moreover, Latin America is the most urbanized part of the developing world, and growing urban populations—often swelled by internal migrants—are straining cities’ and municipalities’ ability to provide basic services such as waste disposal and clean water.

Mcab and Bailey emphasize that demographic phenomena such as population growth and migration do not automatically create environmental degradation or threaten national security. Instead, it is the manner in which they interact with other socio-economic and political factors that can lead them to damage the environment or foster insecurity.

A European Union (EU) report released ahead of a major EU summit on March 13-14 warns that climate change is likely to create or worsen a host of local, regional, and global security challenges. “Climate change is best viewed as a threat multiplier which exacerbates existing trends, tensions and instability,” says the report.

Migration and Climate Change, a new report prepared by Oli Brown for the International Organization for Migration, examines current and future migration due to climate change; explores climate change-related migration’s implications for development; and recommends policy responses.

The rapid recovery of nature tourism in Kenya is central to stabilizing the fragile nation, bolstering its economy, and protecting its biodiversity, said UN Environment Programme Director Achim Steiner.

Two articles from Reuters highlight the intertwined environmental, demographic, and political challenges Yemen faces. “Yemen’s painful struggle to build a modern state may be overwhelmed by rampant population growth, dwindling resources, corruption and internal conflicts,” writes special correspondent Alistair Lyon. One of Yemen’s greatest challenges is water scarcity, which is only becoming more acute as the population booms.

“Many argue that demographic trends can interact with other factors such as poverty, poor governance, competition for natural resources, and environmental degradation to exacerbate tensions and contribute to conflict….Family planning will not end conflict, of course, but slowing the rate of population growth can help stabilize a country in turmoil,” writes ECSP’s Gib Clarke on the RH Reality Check blog.

Papers and presentations from “Population, Health, and Environment: Integrated Development for East Africa,” a November 2007 conference in Addis Ababa, Ethiopia, that the Environmental Change and Security Program helped organize, are now available online.

Uncovering the numerous variables that can influence global climate change can be daunting. Brian O’Neill and his colleagues are improving our understanding of some of these factors by modeling how demographic shifts—such as aging or urbanization—could impact climate change. O’Neill is a scientist at the National Center for Atmospheric Research’s Institute for the Study of Society and Environment in Boulder, Colorado, and also leads the Population and Climate Change (PCC) Program at the International Institute for Applied Systems Analysis (IIASA) in Laxenburg, Austria. Researching population-environment interactions and the science and policy of global climate change led to O’Neill’s recent work as a lead author for the Intergovernmental Panel on Climate Change‘s Fourth Assessment Report. In this podcast, O’Neill describes how shifting demographic patterns could influence a changing climate.

Norman Borlaug’s innovative plant breeding techniques—which he used to develop varieties of wheat resistant to stem rust—spawned the Green Revolution and earned him the Nobel Peace Prize in 1970. An article in MIT Technology Review (free registration required) discusses why the Green Revolution did not spread to Africa and which policies and techniques could strengthen African agriculture.

In Dead Water, a report released today by the UN Environment Programme, warns that pollution, overharvesting, invasive species, and climate change pose grave threats to the world’s fisheries and coral reefs. “Fishing for a Secure Future,” a recent meeting series hosted by the Wilson Center’s Environmental Change and Security Program (ECSP), examined the many challenges facing fisheries—as well as potential solutions.

U.S. officials might have taken more aggressive steps to combat climate change at the recent UN climate change conference in Bali had the Pentagon pressured them more forcefully, argue John Podesta and Peter Ogden in a Financial Times op-ed. According to Podesta and Ogden, climate change will threaten the U.S. military’s ability to effectively perform many of its duties, including responding to natural disasters and stabilizing fragile states.

“While governments continue to rely on the military as a preferred tool of security policy, the nature of many of the world’s intractable conflicts suggests severely misplaced priorities. Research suggests that among the underlying reasons for many tensions today are competition over lucrative resources and the repercussions from environmental degradation,” writes the Worldwatch Institute’s Michael Renner, who argues that UN peacekeeping forces, if given sufficient funds, could do a better job calming unstable regions than militaries. Renner also discussed environment-conflict links at the Wilson Center in June 2007.

Mongolians are moving from the steppes to cities in record numbers, and climate change is one of the drivers of this migration, reports National Geographic. “Reign of Sand,” a multimedia report by the Wilson Center’s China Environment Forum and water NGO Circle of Blue, explores how desertification is threatening Inner Mongolians’ traditional livelihoods.

A report by the Population Council examines the impact of the Partners for Food Security project, which aimed to reduce the food insecurity of HIV-infected households in Tororo, Uganda, by fostering collaboration among agricultural, health, and economic development organizations. According to the report, “the coordination of agricultural extension and HIV/AIDS education and awareness can enhance the outcomes of both sets of activities.”

Lacking adequate protein in their diet, refugees in Tanzania are eating chimpanzees and other endangered species, says a report by the international wildlife conservation group TRAFFIC, a joint project of the World Wildlife Fund and the World Conservation Union (IUCN). “Relief agencies are turning a blind eye to the real cause of the poaching and illegal trade: a lack of meat protein in refugees’ rations,” said George Jambiya, the lead author of the report, which urges humanitarian agencies to supply refugees with legal, sustainable wild meat.

“The risks of climate change demand a rethink of approaches to security,” writes Chris Abbott in An Uncertain Future: Law Enforcement, National Security and Climate Change, a report released recently by Oxford Research Group. Climate change’s impact on security concerns has recently moved to the forefront of global dialogue, a development Abbott links to three trends: widespread acceptance of scientific evidence that climate change is real; increased attention to energy security; and growing awareness of nontraditional threats around the world.