Southern Chinese city of Guangzhou is battling dengue fever spread which is driven by warming climate. We checked with Professor Wu Zhiwei from Nanjing University on how viruses are changed by the climate. Ahead of COP29 in Baku, Azerbaijan, health experts are stepping forward to raise awareness in climate-related health risks. The Lancet’s launched a dense report reviewing extreme weather events and their impacts on public health. We check on the China report in Beijing. Professor Cai Wenjia told us how China’s preparing and adapting to more radical climates.