Last month, Bolivia filed a counterclaim against Chile in the International Court of Justice—the latest salvo in their battle over rights to the waters of the Silala River. The court will decide whether Silala is “an international watercourse”—thus granting water rights to Chilean mining operations—or simply an artificial diversion of Bolivian spring water by Chile. This legal case marks the latest chapter in Bolivia and Chile’s historically delicate relationship, which dates back to the War of the Pacific in the late 19^th century.

Last year, four rivers were granted legal rights: the Whanganui in New Zealand, Rio Atrato in Colombia, and the Ganga and Yamuna rivers in India. These four cases present powerful examples of the increasing relevance of rights-centered environmental protection. Like corporations, which have legal rights in many jurisdictions, these rivers are rights-bearing entities whose rights can be enforced by local communities and individuals in court. But unlike corporations, these rights are not yet recognized in international treaties. Which raises the question: what are the implications of rights for nature for international environmental law?

In a recent article published in PLOS ONE, Juliann E. Aukema, Narcisa G. Pricope, Gregory J. Husak, and David Lopez-Carr address the impacts of climate change and population growth on areas with vulnerable ecosystem services and biodiversity, and in reverse, how degraded ecosystem services effect vulnerable populations. The authors analyze locations between 50 degrees latitude north and south that had changing precipitation patterns in the past 30 years.

As global climate change affects livelihoods across the world, migration patterns are also changing. In a recent study published in Global Environmental Change, Clark Gray, Valerie Mueller, and I found that since the 1970s, climatic variations have been increasing internal migration across many South American countries, with few exceptions. And many people are headed to cities.

When Lake Poopó, Bolivia’s second-largest lake, dried up last December, an entire community lost their way of life and the scientific community cast their eyes to the map asking, where next? They didn’t have to look far. According to a report prepared by the World Lake Vision Committee, a collaboration between the International Lake Committee Foundation, the Shiga Prefectural Government of Japan, and the United Nations Environment Program, there are very few major lake systems that are not experiencing decreasing water quality, volume, biodiversity, or some combination of the three.

I remember the first time I made the four-day trek into the heart of Bolivia’s Carrasco National Park (CNP) 12 years ago like it was yesterday. I knew it would be a challenge to help communities agree on the boundaries of the protected area, given the high level of tension between indigenous communities, illegal migrant farmers, and park authorities over land rights, but I was unprepared for just how intense our first meeting would be.

The government of El Salvador took a truly extraordinary step in an attempt to control the rapidly spreading Zika virus last week by asking its citizens to avoid getting pregnant from now until 2018. Yes, you read that right.