What exactly is meant by “water security?” Different conceptualizations of the problem can lead to different, possibly misguided, solutions, says Coleen Vogel in this week’s podcast. Vogel, professor at the University of Pretoria and a lead author of the IPCC’s 4^th and 5^th assessment reports, calls for reframing the water security discourse in three key ways.

With less than 500 days until they expire, it’s almost certain that the Millennium Development Goals on child mortality and maternal health will be missed by many countries. Already, work on drafting the MDG successors has begun; but unless policymakers put nutrition at the center of maternal and child health systems, reducing global maternal and child mortality ratios by an appreciable amount will be difficult, says Dr. Ranu Dhillon in this week’s podcast.

“Climate change is not just a far-away thing that affects far-away people,” says Ian Kraucunas, deputy director of atmospheric sciences and global change at the Pacific Northwest National Laboratory in this week’s podcast. “It affects things people here in the U.S. care about – and, in fact, that includes national security.”

Successfully incorporating the rights of young people and women into whatever development agenda succeeds the Millennium Development Goals next year hinges not only on the scope of new goals, but how those goals are worded, says Suzanne Ehlers in this week’s podcast.

More than 1.8 billion people – nearly a third of the global population – are between the ages of 10 and 24, comprising the largest-ever generation of young people. According to Babatunde Osotimehin, executive director of the United Nations Population Fund (UNFPA), “how we meet the needs and aspirations of these young people will define the world’s future.”

In the quest to improve maternal health care for the world’s poorest women, getting more mothers into clinics for regular check-ups during pregnancy is often trumpeted as a critical starting point. But delivering antenatal care to women in low-resource settings is as much about quality as it is about quantity, says Faith Muigai in this week’s podcast.

There are now well over 16 million refugees worldwide and 65 million people internally displaced by conflict and disasters, according to recent estimates. As more and more people are uprooted from their homes, mounting environmental pressures threaten to reinforce cycles of poverty and displacement if left unaddressed, says Alice Thomas in this week’s podcast.

As Hurricane Sandy bore down on New York in October 2012, the city’s chief urban designer was at home in Brooklyn deciding whether or not to evacuate. In the end, Alexandros Washburn decided to stay.