While it may seem obvious, it bears repeating that certain parts of the world are more susceptible than others to the adverse impacts of climate change. And since humans are distributed unevenly across the earth’s surface, certain people are more susceptible than others as well.

The Sahel has endured multiple debilitating food crises over the last five years and climate change has often been fingered as the culprit. But it is important to equally consider the amplifying effects of demographic trends on resource scarcity, says the University of Peace’s Marcel Leroy in this week’s podcast.

A central tenet of John Kerry’s time as Secretary of State has been an emphasis on climate change. In a speech in Indonesia this year, he compared the threat of changing climate conditions to terrorism and weapons of mass destruction. Though the United States has been slow to enact major climate legislation, the Department of State has developed a “road map” for responding in its own way. The REDD+ program could play a major role in this response, says Melanie Nakagawa of the department’s policy planning staff in this week’s podcast.

Ever since Thomas Malthus’ 18^th-century treatise linked overpopulation with conflict and poverty, population growth has been a subject of concern and controversy. But does population decline warrant similar attention? According to Steven Philip Kramer, the subject of this week’s podcast and author of The Other Population Crisis: What Governments Can Do About Falling Birth Rates, it does.

In sub-Saharan Africa, women collectively spend an estimated 40 billion hours a year gathering water, often walking miles to the nearest source, which may not be clean, and braving exhaustion, harassment, and worse along the way. Water availability and quality at health clinics is often not much better, creating a crisis for women, especially pregnant women, throughout the continent. A mutual solution lies in better coordination between efforts to improve water, sanitation, and hygiene (WASH) and maternal health, says the African Medical and Research Foundation’s Lisa Meadowcroft in this week’s podcast.

Resilience means different things to different people. For many in the international development and humanitarian communities, building resilience means responding to growing climate risks through disaster mitigation and planning. But for people like Birhani Fakadi, a 39-year old mother of 11 in rural Ethiopia, it also means access to reproductive health and family planning services, says ECSP’s Roger-Mark De Souza in this week’s podcast.

Reducing gender-based violence requires turning our attention to what we normally do not see, says Alfred Omenya of Eco-Build Africa. In this week’s podcast, Omenya, who collaborated on a four-year study investigating all types of violence in four cities around the world, explains how certain forms of gender-based violence are “invisible” in conventional research and policy.

India has the second largest – soon to be largest – population of any nation on the planet and boasts a rapidly developing economy, yet it consumes only a fraction of the energy of China or the United States. Much like China before it, the Indian government has proposed an ambitious system of hydroelectric projects in an attempt to catch up.