The mother capybara and her three babies chew on grasses along the Los Amigos River as we drift near. Around a bend, white caimans fortify each sandbar, mouths open, waiting. Kingfishers plunge into the water to retrieve a morning meal, as oropendolas fly overhead. Spider monkeys and red howlers balance in the treetops of the soaring canopy 30 to 60 meters (100 to 200 feet) high that lines both riverbanks.

This summer, United Nations agencies published three reports that offer a sobering assessment of the current state of international security and development, focusing on multidimensional poverty, hunger, and forcible displacement. As some countries succeed in steadily improving the living conditions of their most vulnerable populations, others have struggled to overcome sustained episodes of political instability and violent conflict. Together, the reports affirm the urgency with which the international community must reorient its policy priorities and take action to achieve the Sustainable Development Goals (SDGs) by 2030.

Our world is drowning in plastic pollution with nearly 8 million tons of single-use plastic and some 700,000 tons of abandoned fishing gear leaking into marine ecosystems each year. Plastic waste endangers marine species. For example, animals become entangled in abandoned nets. Marine birds, fish, whales and sharks are sickened or die when they accidentally ingest plastic. According to a 2017 study, around 90 percent of single-use plastic that pollutes our oceans comes from 10 rivers, 6 of which are in China. No Avenger superheroes can make this problem go away; rather the world needs heroic efforts by consumers, businesses, and governments to curb these plastic leaks. Encouragingly, China’s war on pollution has catalyzed new bottom-up activism and top-down policies that are starting to spur action to reduce plastic leakage.

A problem is looming. Most water infrastructure isn’t designed to meet the demands of the increasingly volatile world that climate change is producing. Our modern landscape requires a reconceptualization of infrastructure’s demands and needs that often defies convention. And nowhere is a flexible and responsive approach more crucial than in water infrastructure, where we are experiencing unprecedented changes in flows and increasing pressures on consumption, according to Wellspring: Source Water Resilience and Climate Adaptation, a new report from the Global Resilience Partnership, the Alliance for Global Water Adaptation and The Nature Conservancy. The report explores some ways practitioners can take a new approach to source water protection that would enhance resilience and help sustain communities and ecosystems in a shifting climate.

What do we (think we) know about the links between climate change and armed conflict? Early attempts to theorize what climate-related conflict might look like were exceptionally successful in sparking policymaker interest in and funding of research on climate-conflict links. But they were more like works of science fiction than science. Since then, research on climate-conflict links has exploded, with hundreds of articles and working papers published on the subject. Moreover, the findings have been all over the map, with some arguing for strong impacts of climate on conflict at multiple temporal and spatial scales, while others argue—in both specific instances, about the supposedly climate-fueled Syrian Civil War, and more generally—that climate-conflict links are overstated.

“We’re attempting to do something that’s never been done before in world history,” said Senator Angus King (I-ME). “The peaceful development of a major new physical asset.” He spoke of the Arctic Ocean at the 8^th Symposium on the Impacts of an Ice-Diminishing Arctic on Naval and Maritime Operations. The symposium was hosted by the Wilson Center’s Polar Institute, in partnership with the U.S. Arctic Research Commission, U.S. National Ice Center, Arctic Domain Awareness Center, Patuxent Partnership, St. Mary’s College of Maryland, and the Ronald Reagan Building and International Trade Center.