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The story
On September 2, 2026, the United Nations Environment Programme (UNEP) released a report warning that global average temperatures will rise more than 1.5°C above pre-industrial levels within just a few years, pushing disaster and health risks to crisis levels. Under current policies, the report projects roughly 2.6°C of warming by 2100; even if every country fully meets its Paris Agreement targets, warming would still reach about 1.8°C. On 5ch, threads split sharply between users citing Nepal’s landslides and Europe’s heat waves to stress the urgency, and others dismissing the findings as “within the margin of error” by pointing to climate swings in the Jomon and Edo periods. The debate also spilled into the gap between rising global averages and how hot or cool any given place actually feels.
On the 2nd, the United Nations Environment Programme (UNEP) published a report warning that global warming will push the worldwide average temperature rise — measured from before the 18th-century Industrial Revolution — past 1.5°C within a few years, raising disaster and health risks to crisis levels. The report states that minimizing the time spent above 1.5°C is key to limiting the damage.
The Paris Agreement, the international framework joined by roughly 190 countries and regions including Japan, marks ten years since taking effect this November and sets a goal of capping warming at 1.5°C. UN Secretary-General António Guterres warned, “The world looks set to break the promise it made a decade ago. We need to move away from fossil fuels and expand renewable energy.”
According to the report, if current climate policies continue unchanged, the global average temperature will rise by about 2.6°C by 2100. Even if every country fully meets the emissions-reduction targets it set for itself under the Paris Agreement and reaches net-zero (balancing emissions against absorption by forests and other carbon sinks), warming is still projected to reach about 1.8°C — with the 1.5°C mark expected to be crossed within the next ten years.
Source: 47news.jp / Read the original article here
What people said
About on the level of Noah's Ark.
Haven't you seen the landslides in Nepal?
Turn off your AC before you start talking in your sleep.
I went from Saitama to Osaka today and the heat there is insane.
Capturing CO2 directly is way more efficient.
Experts worldwide have flatly said that switching to eco-bags, swapping cars for bikes, or ditching plastic bottles for reusable ones doesn't actually accomplish much. Fine if people want to do it anyway, I guess. But more to the point, we just need to capture the CO2 — apparently there are plans to install CO2-capture equipment, targeting 2030.
1.5°C in 100 years is unprecedented… that's an abnormal pace.
Controlling clouds is impossible.
On the medium-to-long-term cycle we're actually supposed to be heading into a slightly cooler period right now, and yet the average temperature is rising. Do you not get how alarming that is?
They say the Jomon period (6,000 years ago) was about 2°C warmer than now. So we're basically heading back toward Jomon-era climate. And the Edo period is said to have been a mini ice age.
If that's true, wouldn't coral have gone extinct back in the Jomon period?
Where's it gonna hit next, I wonder. Probably somewhere with lax monitoring.
Don't get the concept of a global average, huh (lol). You'd do better understanding Japan's own historical temperatures than obsessing over the global average. By that logic the Jomon period must've hit 42°C. Guess going naked was peak efficiency back then (lol).
1.5°C "on average" is seriously bad news. Something that would normally play out over a geological timescale of tens of thousands of years is happening in just two or three hundred years instead — of course that's going to trigger all kinds of natural disasters. Species that can't adapt fast enough will go extinct one after another. And in the end, we won't be able to maintain an environment humans can actually survive in.
You're the type who left summer homework till the last day and never finished it, aren't you.
The Industrial Revolution happened right when temperatures had dropped a ton — it was the low point of a wave that runs on a scale of centuries to a millennium.
The Edo period was cold enough that the Sumida River froze over. In the Jomon period, it didn't even snow in Aomori. Earth's temperature moves in waves, you know.
It's actually the opposite. Earth is basically like a thermos floating in the vacuum of space — getting rid of excess heat is the hard part.
Funny, then, that this summer was actually cool — felt just like summers 30 years ago. The cicadas were singing, the mosquitoes were out too. Is there someone out there who's actually bothered when summer temperatures come in around normal?
Think in terms of the global average, come on. Europe had an insane heat wave, remember?
Warming is an urgent problem for humanity. What you're saying is on the level of pointing out that even if humanity or Earth vanished, it wouldn't matter to the universe — completely beside the point.
Even on the Earth-scale you're talking about, human extinction is a trivial matter too, then, right?
The whole issue is whether Earth's environment can keep supporting humanity's continued existence, that's the point.
On a cosmic scale, humanity is just another species of bacteria.
Talk of "Earth's environment" is pure human ego anyway — it's only ever about whether the environment is convenient for humans or not. For life as a whole, a warmer environment is actually better.
That one was a rare case where the bedrock itself gave way.
Way too pessimistic (lol). Don't remember which country, but there've been similar tsunamis in the past on the order of 30 meters. This kind of thing has always happened.
In 1958 an earthquake in Alaska caused a glacier collapse, triggering a tsunami on the order of 500 meters, apparently. So even the one in Nepal was actually small-scale by comparison.
Background and Key Points of This Story
The Paris Agreement was adopted in 2015 and took effect in 2016, making this year its tenth anniversary; nearly 190 countries and regions have committed to keeping warming within 1.5°C. The figure from UNEP’s report — that warming would still reach 1.8°C even if every country fully met its targets — exposes the limits of nations’ self-set Nationally Determined Contributions (NDCs), and serves as a warning against simple optimism. What split opinion in the thread was the difference between “the rise in global average temperature” and “how a given year or region actually feels.” Japan can have a cool summer in any given year even as the global average keeps climbing — and conversely, skeptical arguments citing Earth’s history of warm-cold swings, such as the Jomon-period sea-level rise or the Edo-period mini ice age, tend to overlook that today’s changes are happening within a span of a few centuries, an extremely short window on a geological timescale. Some extreme takes also surfaced, like “on a cosmic scale humanity doesn’t matter at all” — but what the report is actually concerned with is simply whether the environment can remain one humans can survive in, and in several exchanges the two sides were clearly arguing past each other at completely different scales.
*This article was compiled from excerpts and a summary of the 5ch (Breaking News+) thread “Global Temperatures at Crisis Levels Within Years — Over 1.5°C Since the Industrial Revolution.”
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