“Political demography is a discipline whose time has come,” said Rob Odell of the National Intelligence Council at a gathering of demographers and researchers in New Orleans. “You can sense this inherent dissatisfaction” with a lot of analytical and predictive tools in international relations, he said, and “political demography provides policymakers a way to think about long-term trends.”

The Anthropocene is the idea that human activity is now so impactful and widespread, it shows up as a distinct phase in the geological record. This is a scary proposition in many ways, but it’s also an opportunity. True sustainability isn’t possible without humanity being able to understand and manage our interactions with the planet (and each other). Perhaps a new name for the modern era helps us get into that frame of mind.

In some parts of the world, natural resources are a given; in others, they’re a daily challenge. Our latest short film, Broken Landscape, examines the confrontation between those that rely on “rat-hole” coal mining for a living in northeast India and those affected by water pollution downstream.

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.

The drivers of this year’s Ebola epidemic – the worst on record and the first to reach multiple continents – are structural and deep, wrote Laurie Mazur in one of this year’s most-read articles. Deforestation, persistent poverty, and perhaps most importantly, crumbling trust in public institutions all played critical roles in sparking a fire still smoldering in West Africa.

The culmination of five years of work by three working groups comprising hundreds of scientists around the world, the Intergovernmental Panel on Climate Change’s Fifth Assessment was released in parts throughout this year. A newly released synthesis presents their findings in one document.