Balbine is moving through her coastal village of Andavadoaka with a sense of urgency. Normally she works as a community-based distributor for Blue Ventures’ integrated population, health, and environment (PHE) program in southwest Madagascar, providing health information and products to her community. However, since Cyclone Haruna swept through the region several weeks ago, Balbine has been especially busy distributing diarrhea treatment kits to mothers caring for sick infants, providing families sleeping out in the open with mosquito nets to protect against malaria, setting up water filtering stations, and emphasizing the importance good hygiene practices.

Fifty years after independence, Uganda has one of the highest population growth rates in the world at 3.3 percent – a rate which puts the country on track to nearly double in population over the next two decades. More than 50 percent of the population is under the age of 18. This large youth cohort will ensure that the country continues to grow for decades to come, even if couples choose – and are able – to have smaller families. And according to the State of Uganda Population Report 2011, “with more than one million people added to the population every year, the quality of [health] service delivery will suffer.”

Carbon offsets have fallen in and out of favor since they were established with the Kyoto Protocol in 1997. Critics say they allow wealthy organizations to placate consumers and claim their products are “green” without making any real, lasting changes. But, if the scheme works properly, some action is supposed to be taken somewhere, so what is it like at one of these credit-producing organizations?

The original version of this article, by Vik Mohan, appeared on Blue Ventures’ blog.

I recently spent a hectic and intense couple of weeks in the village of Andavadoaka, where Blue Ventures’ community health project is based, during my annual visit to Madagascar. Although I founded our Safidy (meaning “choice”) health program several years ago, each return visit brings new and inspiring stories and lessons from our team on the ground.

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.

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?

Over the past several years, community-based adaptation has emerged alongside national and regional climate change initiatives as a strategic, localized approach to building resilience and adaptive capacity in areas vulnerable to climate change.

The original version of this article, by Mia Foreman, appeared on the Population Reference Bureau’s Behind the Numbers blog.

Kenya’s population is growing rapidly, more than tripling from 10.9 million people in 1969 to 38.6 million in 2009. According to the United Nations, the annual population growth rate between 2010 and 2015 is 2.7 percent with 22.5 percent of the population residing in urban areas in 2011.