All articles by Isabeau van Halm

Isabeau van Halm is a data journalist based in London. She has previously worked as editor of a local newspaper and is a graduate of the Erasmus Mundus Journalism Master’s. Contact Isabeau at: isabeau.vanhalm [at]

Isabeau van Halm


For ‘Great British Nuclear’, the British government needs to step up

With new investments in nuclear energy, the UK government wants to ensure energy security, but without strong long-term policies the new Great British Nuclear era remains uncertain.

Zimbabwe joins the wave of resource nationalism

Zimbabwe banned the exports of raw lithium ores in 2022, and then banned the exports of all raw mineral ores this year. Isabeau van Halm explores the latest example of a wave of critical mineral resource nationalism.

Why we all should consider the carbon footprint of ‘dark data’

Digitalisation can accelerate the clean energy transition, but the proliferation of ‘dark data’ threatens to grow the digital’s sector’s own carbon footprint.

Weekly data: US clean power capacity additions lag in 2022

New US clean power capacity lagged in 2022 compared with previous years, but the Inflation Reduction Act should boost US renewables deployment over the next decade.

UK private renters left out in the cold this winter

The UK government has energy efficiency schemes for homeowners and is limiting rent increases for public housing, but millions of private renters are being left to their own devices.

Stumbling towards the last frontier: greater hesitancy for deep-sea mining

Greenpeace, the WWF and other environmental organisations were already calling for a global mortarium on deep-sea mining. Now, as Isabeau Van Halm writes, governments are joining them.

Weekly data: The 2022 World Cup may emit more than any international sporting event in the last 12 years

Qatar’s claims that the 2022 World Cup will be climate-neutral raise lots of questions.

Moldova faces winter darkness as Russia weaponises energy

Russia is using energy supplies to destabilise Moldova, but separatist Kremlin-backed Transnistria might be hit the hardest if gas is cut off.

Weekly data: Renewable energy dominates climate finance

More than half of total global climate finance went to the energy sector in 2020. Governments should now support other sectors to drive up climate finance further, says the CPI.

Why the financial odds are stacked against developing countries

To reach global climate goals, and give developing countries access to affordable finance, an overhaul of the financial system is needed.