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ClimateQuiet 5d · day 12

World breaches 1.5°C warming threshold; scientists warn of irreversible tipping points

A three-year average ending in 2025 has exceeded the Paris climate target for the first time, triggering warnings of cascading, irreversible planetary collapse.

newest coverage 5d agosummary written 11d ago4 pieces72 likes & upvotes16 comments Hacker NewsNewswiresMastodonBluesky

What to know

  • Global temperature over a three-year period ending in 2025 has breached the 1.5°C target set at Paris for the first time, with 2024 reaching 1.55°C.
  • Scientists warn the world is approaching multiple irreversible tipping points—ice sheet collapse, Amazon rainforest death—that could trigger sudden planetary change.
  • A decade of weak policy action means the target overshoot cannot be stopped; leading climate researchers declare the Paris agreement effectively dead.
  • Extreme weather is already causing $2 trillion in economic damage per decade and affecting a fifth of the global population.

Robert Watson Atmospheric chemist, former IPCC chairTim Lenton Global-systems researcher, University of ExeterBailing Li NASA Goddard Space Flight Center scientist

World breaches 1.5°C warming threshold; scientists warn of irreversible tipping points
e360.yale.edu

How it unfolded 1 development · click the chart to see its coverage articlesposts

Peak 2 pieces in 3h at Sep 12, 7 AM; 4 pieces over 12 days (1 article · 3 posts) Sep 12, 7 AM — 2 pieces · 1 article · 1 post — Hacker News 1, Newswires 1Sep 12, 10 AM — quietSep 12, 1 PM — quietSep 12, 4 PM — quietSep 12, 7 PM — quietSep 12, 10 PM — quietSep 13, 1 AM — 1 piece · 1 post — Mastodon 1Sep 13, 4 AM — quietSep 13, 7 AM — quietSep 13, 10 AM — quietSep 13, 1 PM — quietSep 13, 4 PM — quietSep 13, 7 PM — quietSep 13, 10 PM — quietSep 14, 1 AM — quietSep 14, 4 AM — quietSep 14, 7 AM — quietSep 14, 10 AM — quietSep 14, 1 PM — quietSep 14, 4 PM — quietSep 14, 7 PM — quietSep 14, 10 PM — quietSep 15, 1 AM — quietSep 15, 4 AM — quietSep 15, 7 AM — quietSep 15, 10 AM — quietSep 15, 1 PM — quietSep 15, 4 PM — quietSep 15, 7 PM — quietSep 15, 10 PM — quietSep 16, 1 AM — quietSep 16, 4 AM — quietSep 16, 7 AM — quietSep 16, 10 AM — quietSep 16, 1 PM — quietSep 16, 4 PM — quietSep 16, 7 PM — quietSep 16, 10 PM — quietSep 17, 1 AM — quietSep 17, 4 AM — quietSep 17, 7 AM — quietSep 17, 10 AM — quietSep 17, 1 PM — quietSep 17, 4 PM — quietSep 17, 7 PM — quietSep 17, 10 PM — quietSep 18, 1 AM — quietSep 18, 4 AM — quietSep 18, 7 AM — quietSep 18, 10 AM — quietSep 18, 1 PM — quietSep 18, 4 PM — quietSep 18, 7 PM — quietSep 18, 10 PM — 1 piece · 1 post — Bluesky 1Sep 19, 1 AM — quietSep 19, 4 AM — quietSep 19, 7 AM — quietSep 19, 10 AM — quietSep 19, 1 PM — quietSep 19, 4 PM — quietSep 19, 7 PM — quietSep 19, 10 PM — quietSep 20, 1 AM — quietSep 20, 4 AM — quietSep 20, 7 AM — quietSep 20, 10 AM — quietSep 20, 1 PM — quietSep 20, 4 PM — quietSep 20, 7 PM — quietSep 20, 10 PM — quietSep 21, 1 AM — quietSep 21, 4 AM — quietSep 21, 7 AM — quietSep 21, 10 AM — quietSep 21, 1 PM — quietSep 21, 4 PM — quietSep 21, 7 PM — quietSep 21, 10 PM — quietSep 22, 1 AM — quietSep 22, 4 AM — quietSep 22, 7 AM — quietSep 22, 10 AM — quietSep 22, 1 PM — quietSep 22, 4 PM — quietSep 22, 7 PM — quietSep 22, 10 PM — quietYesterday, 1 AM — quietYesterday, 4 AM — quietYesterday, 7 AM — quietYesterday, 10 AM — quietYesterday, 1 PM — quietYesterday, 4 PM — quietYesterday, 7 PM — quietYesterday, 10 PM — quietToday, 1 AM — quietToday, 4 AM — quiet 1
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  1. 1

    Tim Lenton warns of sudden tipping-point transitions

    British global-systems researcher Tim Lenton warns that Earth is approaching multiple system tipping points that could transform the world suddenly rather than gradually, with potentially no way back.

    “We are rapidly approaching multiple Earth system tipping points that could transform our world with devastating consequences for people and nature.”
    — Tim Lenton
  2. background

    Robert Watson declares climate policy dead — Atmospheric chemist and former IPCC chair Robert Watson states that 10 years of weak action since Paris mean the target cannot now be stopped from being breached.

  3. background

    ICC reports $2 trillion in extreme-weather economic damage — The International Chamber of Commerce reported that extreme weather linked to climate change cost the global economy more than $2 trillion in the past decade and damaged the lives and livelihoods of a fifth of the world's population.

  4. background

    NASA discloses dramatic increase in weather intensity — Bailing Li of NASA's Goddard Space Flight Center disclosed un-peer-reviewed data showing a dramatic increase in the intensity of the world's weather in the past five years.

  5. background

    Three-year average breaches 1.5°C threshold for first time — A three-year period ending in 2025 has breached the 1.5-degree threshold. Both 2023 and 2025 nearly reached 1.5 degrees above preindustrial levels, and 2024 hit 1.55 degrees—the hottest year in the three-year record.

  6. background

    Paris climate conference sets 1.5°C target — Nations agree on the 1.5-degree Celsius warming limit at the Paris conference, at the insistence of vulnerable nations, to prevent severe weather and runaway warming.