France’s president Francois Hollande meets  Hoesung Lee, the new head of the Intergovernmental Panel on Climate Change,  and Valerie Masson-Delmotte, the new co-chair, at the Elysee Presidential Palace in Paris on  October 15th, 2015. Photograph: Eric Feferberg/EPA

Calling all climate scientists, write more clearly! With just a few weeks before COP21, this is what a group of European researchers (from France, the(...)

 Indian Nobel Peace Price laureate Rajendra Kumar Pachauri:  quit as chair of the UN panel of climate scientists after a sexual harassment complaint against him

India’s Rajendra Pachauri quit as chair of the UN panel of climate scientists, ending 13 turbulent years in charge of the Nobel Peace Prize-winning gr(...)

Environmental activists on a ‘People’s Climate March’ on Wednesday in  Lima, where negotiators from 190 countries are attempting to lay the foundation for a global agreement on climate change in Paris next year. Photograph: Guadalupe Pardo/Reuters

As the UN’s 20th climate change conference struggled to break a deadlock, ministers and delegates from more than 190 countries were reminded of the hi(...)

US secretary of state John Kerry speaking in Lima: “We can rise above the debates that have dragged us down . . . for the sake of our children and our grandchildren”. Photograph: Enrique Castro-Mendivil/Reuters

If an ambitious agreement is not reached urgently to tackle the grave threat posed by climate change, it would be seen by future generations as a “mas(...)

The IPCC report says options available to cut emissions, include using energy more efficiently, switching to renewable energy sources and investing in large-scale afforestation. Photograph: Reuters

Global greenhouse gas emissions will need to fall to zero by the end of this century if the world is to avoid the most devastating impacts of climate (...)

 US president Barack Obama speaks during the Climate Summit  at United Nations headquarters in New York yesterday.  He  called on world leaders to unite in tackling climate change before it was too late to avert its potentially disastrous consequences. Photograph: Andrew Gombert/EPA

US president Barack Obama has called on world leaders to unite in tackling climate change before it is too late to avert its potentially disastrous co(...)

How many more scientific reports will it take before we wake up to the reality of global warming and its devastating consequences for humanity (...)

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(...)