The 2014 Environmental Index (EPI) ranks countries on high-priority environmental concerns, including air quality, water management, and climate change. In this podcast, Angel Hsu, lead author of the 2014 EPI, discusses the rankings and global performance trends. Overall, the index reveals that the world is doing well on improving drinking water and sanitation. Progress in these categories tracks the concerted pursuit of the Millennium Development Goals, which have clear targets, strategies, and metrics for assessment on water and sanitation. Poorer environmental performance is seen in areas with less defined targets and goals, as with fisheries, industrial wastewater treatment, and air quality. For more information on the 2014 EPI visit epi.yale.edu.