In the course of development, most countries undergo a demographic transition. Health conditions improve and mortality rates decline, causing rapid population growth and a relatively high proportion of young people. Over time, if fertility declines, as it has in most places, growth slows and there is a period when the proportion of very young “dependents” shrinks in comparison to the working age population. This moment represents an opportunity for a “demographic dividend” – an economic boom as a comparatively large cohort of the total population moves through their most economically productive years. [Video Below]

Who walks away from fertile agricultural land available to lease for as little as $1 per year per hectare? Recent reports indicate international investors are doing just that across sub-Saharan Africa.

Migrants and Syrian refugees have become the new “stranded polar bear” of climate change imagery. But most such impacts will seldom be so dramatic or camera-ready.

The new climate deal coming out of Paris commits governments to hold the rise in average global temperatures to “well below” two degrees Celsius compared to preindustrial levels. An important dimension of this agreement calls for subsequent work on limiting the increase to 1.5 degrees. This is an important win for islands and other low-lying countries, and for humanity.

Global attention is understandably focused on Syrian refugees, but the migration crisis in Europe is part of a bigger trend that climate and social scientists have been warning about for years.

As the UNFCCC Conference of the Parties (COP) gets underway in Paris, #resilience appears with increasing frequency on my Twitter feed, and I frequently hear talk about “socio-ecological resilience,” “climate-resilient development,” and “resilience programming.”

In his speech on climate change and national security on November 10, Secretary of State John Kerry said climate change is already a “threat multiplier,” and that worse is to be expected if climate change continues unchecked. But the relationship between the environment and violent conflict is complex and often indirect. Researchers have been wrangling for years over the role that global environmental change plays in fueling conflict and state fragility.

When Colombia is in the news, it’s not necessarily for the reasons we Colombians would like. We have lived through 50 years of violent conflict. Peace is a very abstract idea to most of us. Despite this we are still some of the happiest people on Earth.