Mr Vicente Barros, IPCC Working Group II co-chair, stressed the importance of adapting to climate change. Photograph: EPA

A bleak picture for humanity, depending on how much the world actually warms in the 21st century, is painted by the UN’s Intergovernmental Pane(...)

A man places his hand on the parched soil in the Greater Upper Nile region of South Sudan in 2012. Future heatwaves could threaten key global food crops if climate change is not addressed. Photograph: PA

The world is at risk of “crossing multiple tipping points”, triggering dangerous global warming, if average surface temperatures rise by 4 degr(...)