While most hydrogen research focuses on the technical and cost hurdles to a full-scale hydrogen economy, little consideration has been given to the geopolitical drivers and consequences of hydrogen developments. The technologies and infrastructures underpinning a hydrogen economy can take markedly different forms, and the choice over which pathway to take is the object of competition between different stakeholders and countries. Over time, cross-border maritime trade in hydrogen has the potential to fundamentally redraw the geography of global energy trade, create a new class of energy exporters, and reshape geopolitical relations and alliances between countries. International governance and investments to scale up hydrogen value chains could reduce the risk of market fragmentation, carbon lock-in, and intensified geo-economic rivalry.

Africa has only contributed a small fraction of global greenhouse gas emissions yet faces disproportionate risks from climate change. This imbalance is one of many inequities associated with climate change and raises questions concerning the origin, distribution and thematic prioritization of funding for climate-change research on Africa. This article analyses a database comprising USD 1.51 trillion of research grants from 521 organizations around the world and covering all fields of research from 1990 to 2020. At most 3.8% of global funding for climate-change research is spent on African topics – a figure incommensurate with Africa’s share of the world population and vulnerability to climate change. Moreover, institutions based in Europe and North America received 78% of funding for climate research on Africa, while African institutions received only 14.5%. Research on climate mitigation received only 17% of the funding while climate impacts and adaptation each received around 40%. Except for Egypt and Nigeria, funding supported research on former British colonies more than other African countries. The findings highlight the need to prioritise research on a broader set of climate-change issues in Africa and to increase funding for Africa-based researchers in order to strengthen African ownership of research informing African responses to climate change.

Since Russia invaded Ukraine in February 2022, the possibility of reducing Europe’s energy dependence on Russian resources has been hotly debated. The fossil fuel industries received most attention as European Union leaders first introduced gradual sanctions on Russian coal and later on oil and gas, while Russia responded with supply cuts. However, Russia’s role as a major player in the global nuclear power sector has remained largely below the sanctions radar, despite dependencies on Russian nuclear technology, uranium supplies and handling of spent nuclear fuel. Here we analyse the state nuclear company Rosatom and its subsidiaries as tools of Russian energy statecraft. We map the company’s global portfolio, then categorize countries where Russia is active according to the degree and intensity of dependence. We offer a taxonomy of long-term energy dependencies, highlighting specific security risks associated with each of them. We conclude that the war and Russia’s actions in the energy sector will undermine Rosatom’s position in Europe and damage its reputation as a reliable supplier, but its global standing may remain strong.