On Wednesday, June 21, 2017, authorities in Beijing, Tianjin, and Hebei warned residents to prepare for a storm that could trigger flooding and possibly landslides. Flood warnings have become all too common in China: In 2013, more than 230 Chinese cities experienced floods. But Mother Nature is not entirely to blame; the cities’ outdated drainage systems are quickly overwhelmed and sprawling concrete gives stormwater runoff no place to go.

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”).

Before the 2015 floods that drowned Chennai, Pradeep John spent several years posting thorough and dutifully accurate updates and alerts on Twitter and Facebook as the Tamil Nadu Weatherman. An amateur meteorologist who developed considerable expertise in weather data and satellite imagery, John’s online followers relied on his crisp forecasts and advice.

As more climate change seems locked in – some estimates suggest a 1.5-degree Celsius (2.5 degree Fahrenheit) rise above pre-Industrial averages is guaranteed – more governments are allocating resources to adaptation. Caribbean communities that contribute very little to climate change are some of the most vulnerable, and representatives from many met in October 2016 in Grenada to share experiences and build technical capacity.

CHENNAI, India – Almost a decade ago, when the first of Chennai’s bleach-white IT office buildings replaced coconut groves along the Bay of Bengal south of the city center, leaders hailed the potential for a new wave of clean jobs. Nine years later, it is clear that planners did not fully anticipate the consequences.

Forecasts of future climate conditions are fairly good, but forecasts of future socioeconomic conditions are another story. To get a sense of how climate change will impact society, many resort to simply layering future climate conditions on top of current socioeconomic conditions. That’s a mistake, write Wolfgang Lutz and Raya Muttarak in Nature Climate Change. “We see little value in the purely hypothetical exercise of assessing potential impacts of the future climate on a society that will not exist in the future.”