The summer of 2022 has been a season of climatic extremes across the globe, including record-breaking heatwaves and droughts in both the United States and Europe. But even these unprecedented extreme weather events pale in comparison with China’s heatwave from hell. For more than two months, a huge swath of the world’s most populous nation has been baking under temperatures of up to 113 degrees Fahrenheit. According to state media, this extreme heatwave affects an area of over 500,000 square miles, equivalent to more than twice the size of Texas. In terms of duration, intensity, and area affected, it is almost certainly the most severe heatwave ever recorded anywhere in the world.

Climate security is an essential conceptual framework to understand the global interplay of biophysical and socioeconomic forces that threaten our planet. Indeed, it is so important that new currents of science, politics, and advocacy make refining definitions a necessity.

Hydropower is the largest source of low-carbon electricity in the world today. And its benefits are needed more than ever. The International Energy Agency estimates that we will need to double the amount of installed hydropower capacity—which stands today at around 1360 gigawatts worldwide—in order to limit the rise in average global temperatures to 1.5 degrees Celsius above pre-industrial levels.

The negative impacts on global food security wrought by Russia’s war in Ukraine are obvious. But recent news that Russia currently occupies more than one fifth of Ukrainian farmland, draws attention to another dimension of this politically-induced food and agricultural crisis: land itself. Of course, territory has long been an object of conflict and warfare. But agricultural land—in particular—is also a key, though understated, dimension of the geopolitical ambitions undergirding Russian activity at home and abroad.

Meeting the immense impacts of climate change will require strong “top-down” policies to reduce emissions and remove carbon from the atmosphere, as well as building resilience in the face of climate stresses and shocks. As communities and governments undertake rapid and fundamental transformation of sectors and systems—energy, transportation, buildings and even green spaces—the need for governments to develop strategies that drive innovation and technological solutions becomes more urgent and essential.

The much-needed transition to a zero carbon, green economy offers opportunities to contribute to peace, but only if the conflict risks of transition are understood and managed to produce a just and peaceful transition. That means minimizing “backdraft”—the unintended negative impacts of transition that are a key obstacle to that goal.

Of COVID-19’s many lessons, one is most critical to our collective next steps:

Business as usual in global health is no longer possible.

The pandemic exposed weaknesses in health systems across the world, and particularly in the delivery of equitable, high-quality reproductive, maternal, newborn, adolescent, and child health (RMNCAH) services. It also reinforced that effectively addressing these challenges requires rapid, responsive approaches driven and owned by countries and local institutions.

Ever since the CNA’s Military Advisory Board—composed of former U.S. military personnel—named climate change as a “threat multiplier” in a 2007 report, the term has gained widespread currency both in environmental and national security circles. It also has propelled the need to assess and address climate-related security risks higher up overall policy agendas.