The impact of climate change, environmental degradation, and disasters on migration and human mobility is receiving more and more attention, by policymakers, academics, and the press alike. While there are gaps in the evidence base, much suggests that the vast majority of people will seek to move in...

In recent decades, the number of people migrating irregularly from the three Northern Triangle countries of Central America—El Salvador, Guatemala, and Honduras—has been increasing, putting pressure on the Biden-Harris administration to address the root causes of irregular migration and deliver “res...

In this paper, we introduce the concept of climate debt and provide country-level estimates through 2035 under a business-as-usual scenario. These estimates can help inform the debate on climate change by providing a clear view of which countries have (until the present) contributed the most to clim...

A considerable body of recent research attempts to shed light on China’s bilateral aid and finance flows, but there have been fewer efforts focused on China’s participation in multilateral development channels. As a result, China’s role across the landscape of multilateral institutions and funds is ...

Behind the daily trauma of COVID-19 lies a larger and longer-lasting global health challenge resulting from the consumption of tobacco, alcohol, and sugar-sweetened beverages. Using a sample of 25 large advanced and emerging market economies accounting for three-quarters of global GDP, we show that ...

An increasing share of official development assistance is being used for climate-related activities. This trend is continuing despite the lack of comprehensive cost-effectiveness evidence to guide spending decisions and continuing concerns that few applications are effective or efficient mechanisms ...

Results-based financing (RBF) is one of several broad approaches to finance official development assistance (ODA) “that attempt[s] to connect at least a portion of payment to the verified achievement of results.” Despite some relatively high-profile programs and pilots—and broad interest and curiosi...

In this policy paper we review donor responses to a survey and interviews to probe the effects of the broader political and economic context in which donors operate, and identify internal constraints on humanitarian funding, planning, and making allocative decisions. We identify and highlight percei...

Finance institutions take money from foreign aid budgets to invest in private enterprises. How much should they be given? We can make some progress on that question by looking at the return on investment in the form of higher real incomes for workers and customers, and comparing that to a cash trans...

In an updated review of how the COVID-19 pandemic has been affecting women’s and girls’ health in low- and middle-income contexts, we examine 247 studies between January and March 2021 (peer-reviewed papers, pre-prints, and working papers that met specific search terms, and contained empirical analy...