As our ferry slowly made its way across the Pangani River along the northern coast of Tanzania, I sat next to a woman whose child held her hand tightly. The boy and I exchanged smiles, but we mainly admired the view. The late morning sun was behind us as the royal blue river met the cloudless sky.

Sub-Saharan Africa is a key region both for conservationists and those working for improved public health. Nine of the world’s 34 biodiversity hotspots are in sub-Saharan Africa, as are two of the five most important wilderness areas. This hotbed of biodiversity is also home to many of the world’s most rapidly growing populations and swelling urbanization, which is putting increased pressure on natural resources.

The original version of this article appeared in The Nature Conservancy’s October issue of their Science Chronicles newsletter.

It seems like everywhere you turn recently, you hear how the planet’s population is headed to 10 billion. And obvious questions follow: How can we balance far more people with the natural resources needed for their survival? How will we get more food? How will we get more energy?

While Pakistan’s demographic challenges are perhaps well known – two-thirds of the population of 180 million is under 30 years old – increasing security concerns have prompted discussions about exactly how much the country’s youthfulness is affecting its prospects for peace. On October 10, the U.S. Institute of Peace and George Mason University’s School of Public Policy hosted a day-long conference on “Youth Bulge, Public Policy, and Peace in Pakistan” to tackle this question.

Quantifying the role population plays in food security is “an incredibly powerful piece of information,” said Kathleen Mogelgaard in an interview with ECSP. Malawi is a case in point.

Mogelgaard saw the connections between food, population, and climate change firsthand on a recent trip to the southeast African country, whose population of 15 million is largely dependent on subsistence, rain-fed agriculture. “One in five children in Malawi is currently undernourished,” Mogelgaard said, and climate change paints a bleak picture for the future.

Tanzania’s Saadani National Park is a hotbed of biodiversity and, like other national parks in the region, it’s surrounded by human activity. A report by the BALANCED Project, “Population, Health, Environment Situational Analysis for the Saadani National Park Area, Tanzania,” provides a snapshot of the population, health, and environment situation inside the park to serve as a baseline for future activities of the Tanzania Coastal Management Partnership (TCMP) – a joint initiative of the government of Tanzania, USAID, and the University of Rhode Island’s Coastal Resources Center. A behavioral monitoring system implemented in June 2009 used surveys that reached a total of 437 respondents (54 percent women) from eight villages to analyze the “behaviors that positively and negatively influence the utilization and condition of natural resources.”  The surveys found that arable land is scarce, fisheries are being depleted, and people have inadequate access to healthcare, water, sanitation, fuel, and family planning resources. The results suggest a strong case for expanding TCMP’s existing integrated approach – combining HIV/AIDS, conservation, and livelihoods goals – to include promotion of positive behavior changes, particularly as they relate to family planning and the effects of population growth on biodiversity loss and resource depletion.

The original version of this article, by Michael Kugelman, appeared on Global Times.

In recent weeks, militants in Pakistan have escalated their hostile rhetoric toward India. The subject of their ire is water. Hafiz Saeed, the head of militant Islamist group Jamaat-ud-Dawa, has warned that India plans “to make Pakistan barren” by preventing the waters of the Indus Basin from flowing downstream to Pakistan. 

In 2011, a record 34 billion cubic tons of carbon dioxide were emitted from man-made sources. Half the emitted CO₂ stays in the atmosphere, about a quarter is absorbed on land (as trees grow, for example), and the remainder is absorbed by the ocean. Unsurprisingly, this incredible amount of carbon dioxide significantly changes the ocean environment. Over time, increased absorption of carbon dioxide in the oceans has led to ocean acidification, and overall warming has also led to warming of ocean waters – both changes impact marine ecosystems and the people who rely on them.