The 26th UN Climate Change Conference of the Parties (COP26), hosted by the UK from Oct 31 to Nov 12, 2021, will see world leaders coming together to tackle the ongoing climate crisis and implement measures to reduce carbon emissions to reach net zero by 2050. On Sept 5, 2021, more than 200 leading health journals worldwide, including The Lancet, published a joint Comment on the climate emergency calling for urgent action from world leaders to keep average global temperature increases to less than 1·5°C and reduce the impacts on health from climate change. The Lancet Countdown on Health and Climate Change is also bringing together experts from across the globe to assess how climate change is affecting our health, including cancer, and how the world, in turn, is responding.
