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Scientists warn earth near irreversible “hothouse” state

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wildfire.jpg

Scientists are warning that Earth may be dangerously close to entering an irreversible “hothouse” climate state, according to a new analysis that finds key climate systems are nearer to collapse than previously believed.

The study, published in One Earth, focuses on climate “tipping points” — critical systems that can abruptly shift once global temperatures cross certain thresholds. These include the Greenland and West Antarctic ice sheets, the Amazon rainforest, Arctic sea ice, permafrost, and major ocean circulation systems such as the Atlantic Meridional Overturning Circulation (AMOC).

Researchers warn that destabilization in one system can trigger cascading effects elsewhere. For example, melting ice reduces Earth’s ability to reflect sunlight, accelerating warming, while thawing permafrost and dying forests release greenhouse gases that trap additional heat. Together, these feedback loops could lock the planet into a self-reinforcing “hothouse Earth” trajectory marked by extreme warming and long-term sea level rise — even if human emissions are later reduced.

The warning comes as global temperatures have exceeded 1.5°C above pre-industrial levels for 12 consecutive months. Data from Copernicus Climate Change Service indicates that 2025 will mark the first three-year period in which average global temperatures surpassed the 1.5°C threshold. While the Paris Agreement defines this limit over a 20-year average, scientists say sustained short-term breaches suggest the long-term threshold may already be near or exceeded.

Lead author William Ripple said Earth’s climate stability over the past 11,000 years enabled agriculture and complex societies, but that stability is now rapidly eroding. Co-author Christopher Wolf added that current temperatures may be the highest in at least 125,000 years, with atmospheric carbon dioxide levels above 420 parts per million — the highest in millions of years.

The researchers stress that while preventing a hothouse Earth remains possible, delays greatly increase the risk of irreversible climate outcomes.

Key Takeaways

  • Scientists warn Earth may be nearing irreversible climate tipping points.

  • Sustained warming above 1.5°C raises risk of cascading system collapse.

  • Acting now is far easier than reversing a future “hothouse” climate.

Scientists warn of risk of Earth becoming irreversible 'hothouse'

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  • Bday Prang
    Bday Prang

    unlikely ,as despite the scaremongering , it ain't happening tomorrow , all on this forum will be long dead and buried before any of these doom and gloom predictions come to pass, if they ever do. Wa

  • blaze master
    blaze master

    You do know what an opinion is right ? What's yours on the decades of failed predictions ?

  • BritManToo
    BritManToo

    They should name each scientist involved, make them give an end date. Then when that end date arrives, and nothing has happened, shoot them in the head. End date for running out of food and the world

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And I just watched The Day After Tomorrow yesterday.

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Stuff my grandchildren, I want to burn more dinosaurs and clear more forests so I can make more money…

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15 minutes ago, bannork said:

the Atlantic Meridional Overturning Circulation (AMOC)

The AMOC is already slowing and it's collapse would be a disaster for Western Europe. London is on the same latitude as Toronto Canada yet it currently enjoys a relatively mild climate.

There would also be knock-on effects for us here in Thailand resulting in a dramatic weakening of the monsoons, prolonged dry seasons, and a southward shift of the tropical rain belt.

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don't worry we have it covered, I have a "bag for life" in fact along with most people I have dozens of them, all safely stored in the cupboard under the stairs back in the UK, I also use those special light bulbs,

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23 minutes ago, Bandersnatch said:

There would also be knock-on effects for us here in Thailand resulting in a dramatic weakening of the monsoons, prolonged dry seasons, and a southward shift of the tropical rain belt.

unlikely ,as despite the scaremongering , it ain't happening tomorrow , all on this forum will be long dead and buried before any of these doom and gloom predictions come to pass, if they ever do.

Wasn't most of the world supposed to be underwater some time ago? and aren't we all supposed to be boiling in our own sweat by now ,?

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19 minutes ago, Bday Prang said:

unlikely ,as despite the scaremongering , it ain't happening tomorrow , all on this forum will be long dead and buried before any of these doom and gloom predictions come to pass, if they ever do.

You claimed it's unlikely yet offered no scientific evidence to support your assumptions.

Scientific Consensus: There is high confidence that the AMOC is weakening, but low-to-medium confidence regarding the precise temperature threshold at which it becomes irreversible.

Confidence Interval (Risk Range): 1.4°C to 8.0°C (1.5°C was already breached in 2024)

"The authors find that AMOC collapse and Amazon dieback would likely be the first components to tip. This could be in the next 15 years and 50 years, respectively, depending on the scenario, they find"

https://www.eco-business.com/news/every-01c-of-overshoot-above-15c-increases-risk-of-crossing-tipping-points/

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9 minutes ago, Bandersnatch said:

You claimed it's unlikely yet offered no scientific evidence to support your assumptions.

Scientific Consensus: There is high confidence that the AMOC is weakening, but low-to-medium confidence regarding the precise temperature threshold at which it becomes irreversible.

Confidence Interval (Risk Range): 1.4°C to 8.0°C (1.5°C was already breached in 2024)

"The authors find that AMOC collapse and Amazon dieback would likely be the first components to tip. This could be in the next 15 years and 50 years, respectively, depending on the scenario, they find"

https://www.eco-business.com/news/every-01c-of-overshoot-above-15c-increases-risk-of-crossing-tipping-points/

You do know what an opinion is right ? What's yours on the decades of failed predictions ?

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1 hour ago, Bday Prang said:

Wasn't most of the world supposed to be underwater some time ago? and aren't we all supposed to be boiling in our own sweat by now ,?

No and no.

Thanks for showing your ignorance on the matter.

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1 hour ago, blaze master said:

You do know what an opinion is right ?

Opinions don't change facts, but facts should change opinions

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2 hours ago, Bandersnatch said:

The AMOC is already slowing and it's collapse would be a disaster for Western Europe. London is on the same latitude as Toronto Canada yet it currently enjoys a relatively mild climate.

There would also be knock-on effects for us here in Thailand resulting in a dramatic weakening of the monsoons, prolonged dry seasons, and a southward shift of the tropical rain belt.

Not in my lifetime.

No need to rush down to soi boukhao tonight.

Maybe a hundred thousand years from now?🙃🙃

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50 minutes ago, Bandersnatch said:

Opinions don't change facts, but facts should change opinions

Like the decades of factual prediction ?

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2 hours ago, Bandersnatch said:

You claimed it's unlikely yet offered no scientific evidence to support your assumptions.

Scientific Consensus: There is high confidence that the AMOC is weakening, but low-to-medium confidence regarding the precise temperature threshold at which it becomes irreversible.

Confidence Interval (Risk Range): 1.4°C to 8.0°C (1.5°C was already breached in 2024)

"The authors find that AMOC collapse and Amazon dieback would likely be the first components to tip. This could be in the next 15 years and 50 years, respectively, depending on the scenario, they find"

https://www.eco-business.com/news/every-01c-of-overshoot-above-15c-increases-risk-of-crossing-tipping-points/

The "pivot points" in the Arctic and Antarctica are reached already. That means, that the rest of the "pivot points" MUST FOLLOW.

The "domino stones" will be falling one after the other.

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8 hours ago, Lucky Bones said:

Not in my lifetime.

Based on what empirical evidence?

or just another opinion.

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10 hours ago, Bandersnatch said:

You claimed it's unlikely yet offered no scientific evidence to support your assumptions.

Scientific Consensus: There is high confidence that the AMOC is weakening, but low-to-medium confidence regarding the precise temperature threshold at which it becomes irreversible.

Confidence Interval (Risk Range): 1.4°C to 8.0°C (1.5°C was already breached in 2024)

"The authors find that AMOC collapse and Amazon dieback would likely be the first components to tip. This could be in the next 15 years and 50 years, respectively, depending on the scenario, they find"

https://www.eco-business.com/news/every-01c-of-overshoot-above-15c-increases-risk-of-crossing-tipping-points/

More lies

They are proven liars

  • Popular Post
16 minutes ago, Bandersnatch said:

Based on what empirical evidence?

or just another opinion.

Do some research boy

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Back in the 1970s experts all told us there was a new ice coming where a great big ice sheet would spread down from the arctic, covering everything in ice and we would all live in a perpetual winter. How did that all turn out?

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11 hours ago, Bday Prang said:

unlikely ,as despite the scaremongering , it ain't happening tomorrow , all on this forum will be long dead and buried before any of these doom and gloom predictions come to pass, if they ever do.

Wasn't most of the world supposed to be underwater some time ago? and aren't we all supposed to be boiling in our own sweat by now ,?

They should name each scientist involved, make them give an end date.

Then when that end date arrives, and nothing has happened, shoot them in the head.

End date for running out of food and the world starving was 1990s

End date for 'Peak oil' and us all ending up in the stone age was 2000s

"on at least 41 occasions, these so-called experts have predicted some terrible environmental catastrophe was imminent … and it never happened. And not once — not even once! — have these alarmists had one of their predictions come true."

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4 minutes ago, BritManToo said:

They should name each scientist involved, make them give an end date.

Then when that end date arrives, and nothing has happened, shoot them in the head.

Awesome idea

Make them accountable

1 hour ago, Bandersnatch said:

Based on what empirical evidence?

or just another opinion.

The sun got up today.

It did not incinerate me

Reckon (if I make it), the next 10- 20 years will be similar.

Hmmmm.......sun is so hot.....beer o'clock time with the Soi cat.🙃🙃

  • Popular Post

My gift to Climate Alarmists, it's a really good expose of the socialist conspiracy.

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1 hour ago, Harrisfan said:

More lies

They are proven liars

People who claim that scientists always lie and fossil fuel lobbyists always tell the truth......

  • Popular Post
1 hour ago, Harrisfan said:

Do some research boy

I asked you for evidence to support your opinions and you asked me to do research - what a joke

  • Popular Post
1 minute ago, Bandersnatch said:

People who claim that scientists always lie and fossil fuel lobbyists always tell the truth......

Thousands of scientists are skeptics.

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Just now, Bandersnatch said:

I asked you for evidence to support your opinions and you asked me to do research - what a joke

https://cosmonautmag.com/2020/11/cults-of-our-hegemony-an-inventory-of-left-wing-cults/

1 minute ago, Bandersnatch said:

I asked you for evidence to support your opinions and you asked me to do research - what a joke

Give up all products made with fossil fuels then. That makes you naked living in a cave without fire.

  • Popular Post
2 minutes ago, Bandersnatch said:

Talk about stupid!

The internet burns co2 dude lol

  • Popular Post
3 minutes ago, Harrisfan said:

Thousands of scientists are skeptics.

again with offering opinions and no evidence

"Yes, the vast majority of actively publishing climate scientists – 97 percent – agree that humans are causing global warming and climate change."

https://science.nasa.gov/climate-change/faq/do-scientists-agree-on-climate-change/

It's those Chinese after our AI jobs !

  • Popular Post
1 minute ago, Bandersnatch said:

again with offering opinions and no evidence

"Yes, the vast majority of actively publishing climate scientists – 97 percent – agree that humans are causing global warming and climate change."

https://science.nasa.gov/climate-change/faq/do-scientists-agree-on-climate-change/

I see you are really misinformed. Debunked years ago

  • Cook et al. (2013), the most cited study, found that 97% of climate-related papers reviewed either explicitly or implicitly supported the idea that humans are contributing to global warming. However, Mark Bahner and others have pointed out that only 1.6% of those papers explicitly stated humans were the primary cause of warming, challenging the popular interpretation of the 97% figure.

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