Exceptional drought events, known as megadroughts, have occurred on every continent
outside Antarctica over the past~ 2,000 years, causing major ecological and societal …

Globally, thermodynamics explains an increase in atmospheric water vapor with warming of
around 7%/° C near to the surface. In contrast, global precipitation and evaporation are …

This paper provides an overview of the Special Issue on water supply and water scarcity.
The papers selected for publication include review papers on water history, on water …

BACKGROUND For centuries, thinkers have considered whether and how climatic
conditions influence the nature of societies and the performance of economies. A …

We review the emerging literature on climate and conflict. We consider multiple types of
human conflict, including both interpersonal conflict, such as assault and murder, and …

Social and political tensions keep on fueling armed conflicts around the world. Although
each conflict is the result of an individual context-specific mixture of interconnected factors …

As our planet emerges into a new epoch in which humans dominate the Earth system, it is
imperative that societies initiate a new phase of responsible environmental stewardship …

For decades, conservation and research initiatives in tropical forests have focused almost
exclusively on old-growth forests because scientists believed that these “pristine” …

Introduction Despite the existence of institutions designed to promote peace, interactions
between individuals and groups sometimes lead to conflict. Understanding the causes of …

There is increasing concern that climate change poses an existential risk to humanity.
Understanding these worst-case scenarios is essential for good risk management. However …