Climate change: why the Guardian is putting threat to Earth front and centre

. . . These events that have yet to materialise may dwarf anything journalists have had to cover over the past troubled century. There may be untold catastrophes, famines, floods, droughts, wars, migrations and sufferings just around the corner. But that is futurology, not news, so it is not going to force itself on any front page any time soon.

Even when the overwhelming majority of scientists wave a big red flag in the air, they tend to be ignored. Is this new warning too similar to the last? Is it all too frightening to contemplate? Is a collective shrug of fatalism the only rational response?

The climate threat features very prominently on the home page of the Guardian on Friday even though nothing exceptional happened on this day. It will be there again next week and the week after. You will, I hope, be reading a lot about our climate over the coming weeks.

One reason for this is personal. This summer I am stepping down after 20 years of editing the Guardian. Over Christmas I tried to anticipate whether I would have any regrets once I no longer had the leadership of this extraordinary agent of reporting, argument, investigation, questioning and advocacy.

Very few regrets, I thought, except this one: that we had not done justice to this huge, overshadowing, overwhelming issue of how climate change will probably, within the lifetime of our children, cause untold havoc and stress to our species.