According to the Guardian, scientists poised to release a landmark report on climate change will warn that recent fires and floods, seen around the world, are just a foretaste of what can be expected if global heating takes hold.
An American professor, Michael Mann, tells the paper the effects of climate change are no longer subtle: "We see them playing out in real time, in the form of weather disasters."
A Greenpeace spokesman says that as the host of the UN climate talks, Britain must ensure world leaders sign up to policies that don't just put the brakes on climate change - but "slam it into reverse".
A government source tells the Daily Telegraph that today's report should "focus minds" - and leaders should come to Glasgow with "ambitious proposals on coal, cars, and trees".
The Sun says government insiders have tried to play down the claims that Boris Johnson threatened to demote the Chancellor Rishi Sunak, over a leaked letter.
A Whitehall source insists the prime minister's comments were "all in jest" - but the paper suggests the pair are "at loggerheads" over spending.
A senior MP tells the Financial Times the PM doesn't have the standing to move Mr Sunak.
"He couldn't do it and that's obvious," the MP says, adding, in a reference to Sajid Javid's resignation last year: "To lose one chancellor may be regarded as a misfortune; to lose two looks like carelessness."
The Telegraph leads with a warning by a social mobility expert that too many young people are now going to university.
Sir Peter Lampl of the Sutton Trust says many graduates leave with "astronomical levels of debt" and often without skills wanted by employers.
The Times says the number of university applicants has risen by a tenth in a year - and highlights a call by the education secretary for middle class parents to open their minds to apprenticeships when their children receive their A-level results tomorrow.
Meanwhile, an unnamed cabinet minister tells the Daily Mail that civil servants who refuse to return to the office should be paid less than those already back at their desks because they're not having to commute.
The Times says "a big push" to get officials back to the office is planned from next month.
But a trade union representing civil servants says the world of work has changed - and people who don't realise that sound "like Luddites".
Finally, "pure gold" declares the Mirror - one of a number of papers to picture the triumphant cyclists Laura and Jason Kenny, Britain's most decorated male and female Olympians.
The Guardian quotes Team GB's boss as saying their performance in Tokyo represents "the greatest achievement in British Olympic history" after the athletes matched the medal haul from London 2012.
For the Express, Team GB are the "heroes who lifted the nation".
The Telegraph believes the decision to stage the Olympics during a pandemic paid off. It describes them as the "ghost games" - "eerily bereft of fans but salvaged by the stoicism of the hosts and the luminous talent of the athletes".
The Times says Japan deserves "heartfelt thanks" having laid on "the best games possible in extraordinary circumstances".