BANGWEULU WETLANDS, Zambia – Out here on the endless swamps, a harsh truth has been passed down from generation to generation: There is no fear but the fear of hunger.

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.

“There is no magic bullet or solution to resolving climate change quickly,” said the Population Reference Bureau’s Jason Bremner at the Wilson Center on October 28. “Our next 100 years will be far different from the last 100 or the last 1000…and it has become clear that nations will have to pursue many strategies in order to reduce emissions, build resilience, and adapt.” [Video Below]

Climate change mitigation efforts are more broadly supported when they are framed as a public health issue, according to results recently published in Climatic Change. After polling U.S. participants with political identities ranging from very liberal to very conservative, authors Nada Petrovic, Jaime Madrigano, and Lisa Zaval found most participants, except those who identified as very conservative, believed “health” to be the most compelling reason to reduce fossil fuels.

It is no longer news that Nigeria is a peculiar country, a nation with huge human and natural resources, and whose diversity of peoples and internal geographies is a blessing. Sadly, it is also not news that the country represents at least 10 percent of the global maternal mortality burden, with a currently estimated maternal mortality ratio (MMR) of 487 per 100,000 livebirths (as of 2011).

In his 2007 best-seller, The World Without Us, Alan Weisman explored what would happen to the planet if the human race suddenly vanished – the gradual deterioration of the built environment, the geologic fossilization of our everyday stuff, and the ecological processes that would rebound and thrive without continual and growing human pressure. [Video Below]