Humanitarian need is increasing. Crises are becoming more complex through the interactions between climate change, disasters, and conflicts. Not only are humanitarian crises on the rise, but the nature of crises is changing, largely due to climate change-driven extremes such as floods, droughts and typhoons. Over 90 percent of disasters are believed to be related to climate.

For some time, it has been clear that a global population imbalance is emerging. High income countries, including nearly all of the Americas, Europe, and most of East and parts of South and Southeast Asia, have seen a dramatic, sustained fall in fertility. Already, this is resulting in shrinking labor forces and the oldest mean age populations seen in history. At the same time, the low income countries and even some lower middle-income countries—mainly in Africa but also in Central America, the Middle East, and parts of South and Southeast Asia—continue to have relatively high fertility. This is now, and even more in the coming decades, producing fast-growing labor forces and relatively young populations.

In the years ahead, climate change and the proliferation of new technologies and information availability will require us to reshape our vision of shared waters. Because these megatrends are experienced in concert, the opportunities, challenges, and uncertainties for shared water management will continue to compound over time.

While it is impossible to know precisely how shared water will look in the future, we should already be working to expand how we conceptualize shared waters, address inequities embedded within water management, and develop criteria and processes that successfully identify and include non-traditional shared water actors in decision-making. These shifts will strengthen our ability to generate creative and sustainable management strategies and help us avoid water-related conflicts.

Since the dawn of the Industrial Revolution, humans have so vastly altered Earth’s systems that we’re now in the midst of what many are calling the Anthropocene Epoch. Human activity has become the dominant influence on climate and the environment, inflicting changes that may persist for millennia.

We are razing the planet’s last intact wild lands, degrading, deforesting, carving up, and destroying huge swathes of habitat. We’re overfishing and poisoning our rivers and oceans. We continue to pump greenhouse gases into the atmosphere, raising CO2 levels and hastening climatic changes that are already affecting all life on Earth.

Early scholarship on environmental peacemaking recognized the important role that local civil-society can play in promoting regional cooperation while, at the same time, pressuring governments to protect the environment. For example, in the late 1980s/early 1990s, nongovernmental organizations (NGOs), such as the Union for Defense of the Aral Sea and Amu Darya in Uzbekistan and the Dashowuz Ecological Club in Turkmenistan, were at the forefront of the fight to restore the Aral Sea and protect the region’s biodiversity.