Climate change has prolonged the pollen season by up to a fortnight compared to the 1990s, creating problems for hay fever sufferers, a new report involving UCL academics has found. The 2026 Europe Report of the Lancet Countdown on Climate Change and Health has tracked trends in climate change and health with 43 indicators across five domains and is the work of 65 researchers from 46 academic and UN institutions including, from UCL, Professor Marina Romanello, Professor Marco Springmann,