Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
COP28 started with the first cash pledged for countries devastated by climate change. Plus, penguins survive on thousands of microsleeps and how to finally end the HIV/AIDS pandemic.
Assessing global mean temperature rise using the average warming over the previous one or two decades will delay formal recognition of when Earth breaches the Paris agreement’s 1.5 °C guard rail. Here is what’s needed to avoid the wait.
Health is on the agenda at the COP28 climate meeting. Rising temperatures increase the spread of infectious diseases, claim lives and drive food insecurity.