Severe water shortages in Cape Town, South Africa, are a signal of what’s to come for other rapidly expanding cities. “We will have more and more events like what happened in Cape Town as populations grow and water demand grows,” said Eric Viala, Director and Chief of Party of the Sustainable Water Partnership, in New Security Beat’s top post for April.

Blockchain, the newest technology poised to revolutionize numerous industries, could help decentralize electricity systems across Asia, Europe, Australia and the United States. In Brooklyn, peer-to-peer microgrids allow prosumers—energy consumers who generate small amounts of electricity from renewable sources—to trade energy with other users. Blockchain technology provides distributed ledgers that validate, record, and share each transaction, using smart contracts that automatically execute energy trades when the price and volume of the electricity transaction meet the contracted requirements.

Myanmar is rich in natural resources—gas, oil, minerals, and gemstones—yet is still one of the world’s least developed countries. Extractive industries are the country’s most lucrative sector and the government’s main source of revenue, but most of the benefits do not reach its citizens. Instead, resource extraction in Myanmar causes severe environmental and social problems and fuels and sustains some of the country’s longstanding ethnic conflicts.

“Globally, nearly one billion people still lack access to safe water,” said Sasha Koo-Oshima, Senior International Water Advisor for the U.S. Environmental Protection Agency, at a recent Wilson Center event on the potential challenges and opportunities of wastewater treatment. “In emerging developing countries, children lose 443 million school days per year due to diseases related to water, sanitation, and hygiene,” she said.

When Secretary of the Navy Richard Spencer told the media last week that “the damn thing melted,” he wasn’t talking about an ice cream cone. As the Arctic faces unprecedented levels of open water, Spencer and other naval leaders recently testified to Congress about the U.S. Navy’s strategy, which is changing as quickly as the Arctic itself. 

Plastics. From the devastating effects of plastic pollution on our oceans, to the news that plastic bottles likely pollute the drinking water they contain, plastic pollution—the theme of this year’s Earth Day—has been a highly visible issue, and we’ve seen some notable progress on fighting the plastic battle.  

Intense drought in South Africa’s Western Cape Province has led the world-renowned city of Cape Town to the brink of “Day Zero”—the date at which residents would be forced to collect strictly rationed water supplies from shared distribution taps. Water conservation efforts have so far prevented a massive water shutdown, but the city’s rapid population growth and reliance on surface water dams makes it particularly vulnerable to lower precipitation levels.