ClientEarth, an environmental advocacy organization active in climate litigation, together with Friends of the Earth and the Good Law Project, presented legal arguments before the UK High Court on June 8-9 in their challenge of the UK government’s net-zero by 2050 strategy. ClientEarth asserts that the UK government has not met its legal obligation under the Climate Change Act, which requires the government to set climate policies that satisfy the UK’s legally binding carbon budgets. ClientEarth argues that the UK is relying on unproven technologies instead of supporting opportunities for immediate impact, including recommendations for cutting emissions and reducing energy bills from the UK’s Climate Change Committee, such as increased insulation and low-carbon heating in buildings. ClientEarth notes that the UK’s current approach will require significant and drastic emissions reductions in the coming decades, with increased impacts on young people and future generations. Last month, ClientEarth, along with Dutch campaigners Fossielvrij Netherlands and Reclame Fossielvrij, delivered a letter to Dutch airline, KLM, stating their intention to file a legal claim if the demands set out in the letter are not met. The demands include calling for a ban on all fossil fuel advertising in the EU. ClientEarth intends for the ban to stop companies like KLM from misleading the public over what is needed to reduce emissions and the airline industry’s contribution to climate change. ClientEarth is targeting KLM’s ‘Fly Responsibly’ ad campaign and the airline’s offers for customers to purchase carbon offsets which will be used to fund reforestation projects or the purchase of biofuels to offset the emissions from their flight. ClientEarth states that such campaigns do little to reduce emissions and may instead undermine and delay urgent climate change action.