As global population grows, so does the demand for water. Yet less than one percent of the planet's supply is potable, and estimates suggest that 40% of humanity will not have access to clean water by 2025.
Explore the complex issues surrounding this precious resource in this edition of America Abroad.
It's been called the most successful alliance in world history. President Obama and fellow leaders of the North Atlantic Treaty Organization, NATO, are meeting at an important summit in Chicago this month to discuss the future of the alliance.
NATO troops have now spent a decade in Afghanistan, and more recently, NATO airpower helped to overthrow Moammar Ghaddafi in Libya. But in the face of economic stress, and war-weary publics in the United States and Europe, how will the alliance move forward?
Does the internet poison politics? It's been argued that the rise of 'personalization,' the use of algorithms to filter what you see online, and easy access to the like-minded, have served to reinforce our pre-conceptions.
From the series: Burn: An Energy Journal. Host Alex Chadwick tackles one of the most important energy questions facing America: Are we running out of oil? This hour long broadcast is pegged to the second anniversary of the Deepwater Horizon oil spill in the Gulf of Mexico.