“All of Reykjavik might be able to fit in that apartment block,” remarks Einar Magnusson, the vice president of business development for Iceland-based Arctic Green Energy Corporation (AGEC), as he drives past miles and miles of Beijing’s residential skyscrapers. Following Jiang Zemin’s visit to Iceland in 2002 – the first-ever by a Chinese President – the two nations opened a new chapter in their partnership, which was originally founded upon shared strategic interests. China’s interest in cleaner energy sources has led to a fruitful area of cooperation with Iceland, where geothermal plants generate 66 percent of the country’s primary energy and provide nine in ten households with heat.

Coal — the reigning king of China’s energy sector — generates 74 percent of the country’s electricity and is the main source of the staggering air pollution blanketing Chinese cities. Prompted in large part by the air pollution problem, the Chinese leadership has begun to pivot away from coal by strengthening monitoring and enforcement to limit coal-fired power plant emissions, piloting CO₂ emissions trading projects, accelerating expansion of renewables, and committing to CO₂ reductions in the Paris climate agreement.

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.

With a capacity of 3,300 MW, Sichuan’s Ertan Hydropower Plant—once China’s largest—promised to alleviate provincial energy shortages and spur economic growth when it began generating electricity in 2000. However, in what came to be known as the “Ertan Incident,” provincial officials halted all clean energy generation in Sichuan soon after the plant came online. The Sichuan power company was obligated by law to buy half of its power from coal-fired power plants, regardless of their inefficiency or environmental impacts. To keep the coal burning, the dam was forced to operate at a major financial loss.

“As new energy options emerge to meet global demand, nations that lead stand to gain; should the U.S. sit on the sidelines, it does so at considerable risk to our national security,” advises the latest report from CNA’s Military Advisory Board (MAB), a group of retired generals and admirals.

HONOLULU – Sludge. The final, unwanted byproduct of a toilet flush. The semi-solid stuff that even wastewater treatment plants send packing to the landfill. Unseen in the steel pipes snaking high on the exterior of Honolulu’s H-POWER plant, sludge is injected into a massive boiler where it joins the city’s trash in a roaring inferno. From the gravel lot outside, it all seems very antiseptic and smells less than a stroll past the neighborhood dumpster. But the 70-megawatt waste-to-energy facility is a workhorse, processing as much as 2,000 tons of refuse each day from Oahu’s 1 million residents. All told, it generates up to 10 percent of the electricity needed to power this Pacific island.

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.

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.