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(...)