Water, water everywhere but not a drop to drink: All five of the most popular posts last month focused on water scarcity.

The final two parts of our “Choke Point: Tamil Nadu” series, which explores the conflicting demands for water, food, and energy in the South Indian state, took the top spots. In June’s most popular post, Circle of Blue’s Keith Schneider reports on Tamil Nadu’s leadership in India’s transition to solar and wind energy, which use far less of the country’s scarce water resources than coal and nuclear power plants. Schneider also wrote “New Media Helps Galvanize Tamil Nadu to Fight a Toxic Legacy,” which describes an environmental activist’s fight against industrial water contamination.

In 2012, the U.S. National Intelligence Council judged that within the next 10 years, water problems would be a major contributor to instability in “many” countries that are of interest to the United States. South and Southeast Asia, with its many transboundary river basins, large populations, and geopolitical flashpoints, is one among a number of hotspots where such instability could occur.

Our nine-part “Choke Point: Tamil Nadu” series with Circle of Blue has been a must-read on the conflicting demands for water, food, and energy in the South Indian state. In May’s most popular post, S. Gopikrishna Warrier introduces us to Chennai’s tech-savvy social entrepreneurs, who are providing the city’s residents with real-time information on the risk of flooding. (The ninth and final post in the series was published yesterday; catch up on all of them at “Choke Point: Tamil Nadu”).

MADURAI, India – Before he agreed to serve as minister of state and take command of his country’s mammoth energy production and distribution sector, Piyush Goyal developed one of India’s most spirited political careers. “A man of ideas and competence,” according to First Post, a prominent news organization, Goyal is an accountant and lawyer who rose to the peak of Indian economic and political culture as an investment banker, member of parliament, and treasurer of the ruling Bharatiya Janata Party.

The present understanding of the relationship between environmental conservation and social justice, two of the greatest challenges of our times, is fraught with multiple confusions, especially in the context of developing countries.

KODAIKANAL, India – In the dogged community of eco-activists, journalists, local leaders, and artists that find common ground defending Tamil Nadu from rapacious development and rampant pollution, Nityanand Jayaraman stands out.

CHENNIMALAI, India – There is river and beach sand aplenty in Tamil Nadu. At 130,000 square kilometers (50,200 square miles), the state is about the same size as Nicaragua and has 95 rivers with sandy bottoms and a long Bay of Bengal shoreline. Or did. For almost all of its thousand-year history, the state of Tamil Nadu took all that sand for granted. No longer.