Stepping away from herds of cattle, subsistence farms, and other responsibilities at home, roughly a hundred Kenyan villagers traveled overnight by bus from the Tana River Delta to Nairobi in February 2011 for a hearing at the national high court. The claimants declared that the lack of a “comprehensive land use master plan” infringed on the rights of the region’s people, and called for the prohibition of further land and resource development until such a plan was negotiated.

From the mountains and foothills of the Himalayas to the Terai plains, climate change is rapidly changing life in Nepal. Many communities however, are not strangers to environmental stress; for decades, rapid population growth alongside agriculture and fuelwood collection have degraded land and diminished forests. [Video Below]

There is widespread agreement, and untold publications, that argue urbanization is the defining issue of our time. There are more cities, both large and small, and more people living in those cities than anytime in human history.

How to stop climate change while expanding energy production is one of the biggest challenges in global development. Doing so requires all kinds of improvements in efficiency – from reducing the amount of electricity lost in transmission to better motors and lightbulbs. But, as demonstrated by recent efforts in the Pentagon, changes to how people work may be the lowest hanging fruit.

Population projections undergird many important policy decisions, from the U.S. government’s Feed the Future program to the Sustainable Development Goals. But they’re not as straightforward as they appear. Demographers often base their estimates on complicated assumptions that aren’t obvious to the end user.