The UN Environment Programme has confirmed what many climate scientists feared: keeping global warming below 1.5 degrees Celsius is no longer possible. The finding appears in the 17th edition of the annual Emissions Gap Report, released on October 21, which states plainly that the window has closed after decades of insufficient action.
The report outlines a 'lowest possible' overshoot scenario instead: peak warming of 1.7-1.8°C by mid-century, with a coin-flip chance — about 50% — that temperatures fall back to 1.5°C or below by 2100. Getting even there would require emissions cuts of 18% by 2030, 45% by 2035 and 69% by 2040 versus 2025 levels, plus a massive scale-up of carbon dioxide removal through the century.
Reality looks far weaker. Fully implementing countries' current climate pledges (NDCs) would cut emissions just 5-8% by 2030, putting the world on a path to roughly 2.6°C. Carry on with today's policies and we're heading for 2.8°C. Greenhouse gas emissions in 2025 stayed essentially level with 2024's record, and fossil-fuel emissions actually rose slightly.
UNEP executive director Inger Andersen didn't mince words: previous reports said a 'herculean effort' could still save the 1.5°C goal, and that effort simply wasn't made. UN Secretary-General António Guterres pointed to the damage already happening — deadly floods, extreme heat waves, wildfires and growing inequality, with the least responsible countries suffering first and hardest.
There is a sliver of upside. The report argues there are more opportunities than ever to accelerate: renewables have boomed since the Paris Agreement, coal and oil supply has grown more slowly than forecast, and climate policies have genuinely cut emissions in many places. It sets new sectoral benchmarks for expanding renewables, improving energy intensity, shrinking fossil fuels' share of energy supply and cutting methane — and says scaling up proven policies could still secure the mildest overshoot scenario.
For travellers, this isn't abstract. Overshooting 1.5°C means more heat-stressed summer city breaks, coral bleaching on dive trips, wildfire seasons disrupting holidays in Europe and North America, and stronger storms affecting island destinations. It also sharpens the calculus around flight choices, low-season travel to hot destinations, and supporting places whose tourism economies are climate-vulnerable. The era of treating 1.5°C as a safe ceiling is over; adaptation is now part of trip planning, too.
Story via Colombia One.
