As climate change worsens, the once-unimaginable power to use technology to cool the planet—a method known as “solar geoengineering”—has quietly entered the realm of possibility. Yet the prospect of developing such planet-altering technologies has launched an intense debate: Can this be achieved responsibly? Should it be attempted at all?

My latest book—States and Nature: The Effects of Climate Change on Security (Cambridge University Press)—has been more than two decades in the making. And as I reflect on that journey, I see significant parallels between my own trajectory and the larger efforts to define and refine thinking about climate security.

The harm that comes to the environment during armed conflict is often permanent, yet the lack of advocates to fight for its protection as they happen creates a deafening stillness. Indeed, this state of affairs has led to the environment to be seen as the “silent victim of war.” Vietnam, Kuwait, Syria, Afghanistan, Ukraine, and several more nations have been permanently damaged due to the destruction of the environment during armed conflict which can persist long after hostilities have ceased.

In Iraq, climate change is adding stress to an already precarious situation. Weak public services,  growing unemployment, fossil fuel-related environmental and health hazards, and other factors have generated high levels of social vulnerability and contributed to recent protests. In the top post for May, Dylan O’Driscoll and Shivan Fazil write about how, against this fragile backdrop, insecurity is heightened by increasingly deadly flash floods and more frequent dust storms that pose a public health threat.

In an increasingly unpredictable world of pandemics, conflict, and disasters, climate change is often at the center of conversations about the instability of global affairs. From California wildfires to droughts across East Africa, the role of climate cannot be ignored in any analysis of global unpredictability. And citizens around the world know it. Growing global public support for governments to aggressively act on climate change has led to an increase in policy action on climate issues.

The massive floods, heat waves, raging wildfires, and devastating droughts of 2021 brought the present reality of climate change’s catastrophic impacts on people and ecosystems home to our doorsteps.

Global risks abound these days, from climate change to the next pandemic, as well as acute supply chain disruptions, energy shortfalls, and cybersecurity threats. These challenges play out in a landscape of immense political instability fomented by the Russian Federation, the People’s Republic of China, Iran and others, as well as dangers looming in the potential state collapse of countries like Afghanistan, Yemen, and Sudan. Taken together, the risk tally of our moment is mounting quickly.

As the world reels from the Russian invasion of Ukraine, the pandemic, climate shocks, and other crises, strategic future planning is more important than ever. In April’s most-read article, Steven Gale points to a source of hope in the suite of inclusive, “future-forward” initiatives that are unfolding under UN leadership, from risk reporting to impact assessments and youth engagement. These activities, encompassed by the UN’s Our Common Agenda, represent a global collaborative effort to map future risks and identify policy options in service of long-term well-being for people and the planet.