The UN Population Division updated its population predictions through 2050 this week, and global population is now expected to surpass 9 billion by 2050, with most of this growth occurring in developing countries. Andrew Revkin of the New York Times reflected on the findings on his Dot Earth blog.

Although many of Rwanda’s national development policies recognize the links between population, health, environment, and poverty, actually implementing cross-sectoral collaboration remains challenging. A new policy brief from the Population Reference Bureau examines prospects for—and progress in—integrating these sectors. For more on population, health, and environment in Rwanda, read Rachel Weisshaar’s from-the-field dispatches on the New Security Beat.

“Population growth, climate change and demand for greater food and energy supplies are squeezing global water supplies, according to a new U.N. report,” says the New York Times/Greenwire. The report, Water in a Changing World, will be officially launched at the World Water Forum in Istanbul on March 16, 2009.

Karen Hardee and Kimberly Rovin discuss how population affects Ethiopia’s ability to adapt to climate change and increase its citizens’ food security in an article for peopleandplanet.net.

The Canadian Broadcasting Company’s The Current examines the global politics of water in a season-long series entitled “Watershed.” Recent episodes have highlighted desalination in Israel, collapsing fisheries in Nova Scotia, and Karachi’s black market in water.

“A New Military Mission: Clean Energy,” part of the Center for American Progress’ “It’s Easy Being Green” series, highlights the military’s attempts to become more energy-efficient. Read more about the U.S. military’s environmental initiatives.

Simon Dalby, a professor at Carleton College, discusses the evolution of environmental security with John Tessitore, executive editor of the Carnegie Council, in a video interview (transcript available).

Climate Change, Food Security, and the Right to Adequate Food examines climate change’s expected impact on food production, with a special focus on Africa and Asia.

The BDA Foundation, a Canadian charity, and PharmAfrica, a pharmaceutical company, are working to create a medicinal plants industry that will lift local people out of poverty in the Democratic Republic of the Congo.

From Conflict to Peacebuilding: The Role of Natural Resources and the Environment, based on the work of the UN Environment Programme’s Expert Advisory Group on Environment, Conflict and Peacebuilding, summarizes the links between the environment, conflict, and peacebuilding, and includes 14 case studies of how natural resources affect—or are affected by—conflict.

The authors of “On Population Growth Near Protected Areas” come to an opposite conclusion from Wittemyer et al., who found a pattern of higher population growth near protected areas in Africa and Latin America. “To understand the disagreement, we re-analyzed the protected areas in Wittemyer et al.’s paper. Their results are simply artifacts of mixing two incompatible datasets,” write the authors. “Protected areas may experience unusual population pressures near their edges; indeed, individual case studies provide examples. There is no evidence, however, of a general pattern of disproportionate population growth near protected areas.”

“The President and I agreed to a new initiative that will further cross-border cooperation on environmental protection and environmental security,” said Canadian Prime Minister Stephen Harper yesterday, announcing plans for a U.S.-Canada Clean Energy Dialogue.

Scientists at Purdue University have teamed up with Google Earth to create an interactive map of U.S. CO2 emissions.

Mark Weston, who writes for the Global Dashboard blog, posted an edited version of a recent talk he gave on West African demography and security.

An article in Conservation Letters examining the effect of war on wildlife in Cambodia finds that “the legacy of conflict for wildlife can be profound and destructive. To address post-conflict challenges more effectively, conservation must be integrated within broader peacebuilding processes, including disarmament, demobilization, and reintegration of combatants.”

New York Times environmental reporter Andrew Revkin shares a recent nightmare on his blog, Dot Earth: If human beings achieve inexpensive, renewable energy, will this spur environmentally destructive population growth and consumption?

“Today, one-third of the world’s population has to contend with water scarcity, and there are ominous signs that this proportion could quickly increase,” writes the International Water Management Institute’s David Molden in the BBC’s Green Room. “Up to twice as much water will be required to provide enough food to eliminate hunger and feed the additional 2.5 billion people that will soon join our ranks. The demands will be particularly overwhelming as a wealthier, urbanised population demands a richer diet of more meat, fish, and milk.”

“Climate Wars” is a three-part podcast series by the Canadian Broadcasting Corporation.

Circle of Blue has launched the online radio series “5 in 15”; one episode features water expert Peter Gleick, head of the Pacific Institute, while another highlights Mark Turrell, CEO of technology company Imaginatik.

Conflicts among pastoralists over water and land have increased in drought-stricken northeastern Kenya, reports IRIN News.

Country for Sale, a report by Global Witness, alleges that Cambodia’s oil, gas, and mineral industries are highly corrupt.

Foreign Policy features an interview with General William “Kip” Ward, the commander of the new U.S. Africa Command. The New Security Beat covered General Ward’s recent comments on civilian-military cooperation.

Healthy Familes, Healthy Forests: Improving Human Health and Biodiversity Conservation details Conservation International’s integrated population-health-environment projects in Cambodia, Madagascar, and the Philippines.

Double Jeopardy: What the Climate Crisis Means for the Poor, a new report on climate change and poverty alleviation, synthesizes insights from an August 2008 roundtable convened by Richard C. Blum and the Brookings Institution’s Global Economy and Development Program at the Aspen Institute.

“Although the long-term implications of climate change and the retreating ice cap in the Arctic are still unclear, what is very clear is that the High North is going to require even more of the Alliance’s attention in the coming years,” said NATO Secretary General Jaap de Hoop Scheffer at a seminar on security prospects in the High North hosted by the Icelandic government in Reykjavik.

“I think we will work our way towards a position that says that having more than two children is irresponsible. It is the ghost at the table. We have all these big issues that everybody is looking at and then you don’t really hear anyone say the “p” word,” says UK Sustainable Development Commission Chair Jonathon Porrit, speaking about population’s impact on the environment. Porrit has drawn criticism for his remarks.

A local priest has warned that a Norwegian company’s proposed nickel mines will threaten food security on the Philippine island of Mindoro.

The Feeding of the Nine Billion: Global Food Security for the 21st Century, a report from Chatham House, puts forth 10 proposals designed to make the global food system more resilient, sustainable, and equitable.

Strategic Implications of Global Health, a recent report from the National Intelligence Council, builds on a 2000 National Intelligence Estimate analyzing the links between global health and U.S. national security, but places more emphasis on non-infectious issues like maternal mortality, malnutrition, and chronic diseases.

Bill Gates’ first annual letter about his work at the Gates Foundation includes a chart showing that better overall health is linked to smaller families.

“How Much Would You Pay to Save the Planet? The American Press and the Economics of Climate Change,” a discussion paper from Harvard University’s Joan Shorenstein Center on the Press, Politics, and Public Policy, examines coverage of the economic debate over the Lieberman-Warner Climate Security Act of 2008.

Population Connection’s February 2009 Reporter features stories on Ghana’s slow progress on reproductive health and Thomas Friedman’s book Hot, Flat, and Crowded, among others.

The Economist examines the connections between failed states and conflict, terrorism, poverty, and disease. Failed states were a major concern of the recent U.S. National Defense Strategy.

A study in Science warns that climate change “is likely to have more dramatic effects on global agriculture than previously predicted, leaving around half the world’s population facing serious food shortages,” reports SciDev.Net.

Aging populations in developed countries will precipitate massive social and economic upheavals in the 2020s, argue Neil Howe and Richard Jackson of the Center for Strategic and International Studies in a recent Washington Post op-ed. Read Elizabeth Leahy’s response.