As Pope Francis gets into high gear on his visit to the United States, it’s worth reviewing details and contexts in the extraordinary message to Catholics and the rest of the planet in “On Care for Our Common Home,” the encyclical he issued earlier this year.

According to recent polling, climate change is seen as the single most threatening international challenge around the world, and there’s evidence that all that worry is taking a psychological toll. Adding to droughts, floods, extreme weather, and die-offs, psychologists are observing higher levels of anxiety, depression, and post-traumatic stress disorder in certain areas and professions. Even people who do not actively stress about global warming or view it as a major threat may still suffer psychological trauma from its effects.

More than 80 percent of the estimated 42 million people living in Central Africa’s Lake Victoria Basin depend on fishing or farming for survival. Given this overwhelming reliance on natural resources, the lake’s deteriorating condition – driven by climate change, agriculture, pollution, deforestation, overfishing, and industrialization – has far-reaching implications.

Some of the world’s most crucial ecosystems can also be found in the most conflicted areas. The most progressive peace agreements in these circumstances sometimes include conservation protections, but fewer still include women – and that’s a an article in Peace Review by Conservation International’s Brittany Ajroud, Kame Westerman, and Janet Edmond.

One of the last biodiversity hotspots in Europe was also backdrop to one of its last violent conflicts and now home to its newest nation states. The Prokletije/Bjeshket e Nemuna Mountains, often referred to as the Southern Alps, are a large expanse of wilderness and stunning alpine landscapes that form the border between Montenegro, Albania, and Kosovo. Three national parks share borders and form a patchwork of protected land that could be the basis for an international peace park – a shared resource that could promote cross-cultural exchange collaborative natural resource management, and eco-tourism.

With a new peace process underway between the Colombian government and leaders of the Revolutionary Armed Forces of Colombia (FARC) in Cuba, the spotlight is back on this long-troubled South American country. But decades of civil conflict have overshadowed an incredible fact: Colombia is among the four most biologically diverse countries on Earth.

Last week, the United Nations concluded one of the last negotiations on the road to adopting the Sustainable Development Goals in September. We’ve entered the home stretch of a process that has taken more than two years, bringing governments, civil society organizations, and communities together to define the development goals and targets that UN member states will be expected to aim for over the next 15 years.