Nepal mountain collapse killed 1,400, scientists link to climate change
A rapid scientific assessment identified warming temperatures and thawing permafrost as key destabilising factors.
AI-assisted coverage comparison, editor-supervised · How this was made

Nepal mountain collapse killed 1,400, scientists link to climate change
Photograph: tempo.co (embedded from source)
What this story says
- A mountain slope collapse and flash floods in Nepal and Tibet killed nearly 1,400 people, with over 5,000 still missing.
- Scientists concluded that climate change, including warming temperatures and thawing permafrost, destabilised the slope.
- The disaster released energy equivalent to a magnitude 5.2 earthquake and created a flood moving at 170 km/h.
- Nepal's early warning systems were outpaced, with the first SMS warning sent 38 minutes after the initial collapse.
Who covered it
Percentages are shares of the 10 outlets carrying a published leaning rating. 3 of the 13 outlets we know ran this story carry no rating and are not counted in them. Coverage measured .
Trust
50/100
Craft
60/100
Hype
40/100
13 sources · methodology
Thin on the left so far
Only 1 of the 10 outlets with a published leaning rating that ran this story are rated left.
This story is still being watched, so it is a count and not yet a finding. Coverage keeps arriving for hours after an event, and a side that has published nothing this morning may publish by tonight. If it is still true when we stop checking, we will say so plainly.
A mountain slope collapsed and flash floods swept through Nepal and Tibet, resulting in nearly 1,400 deaths and over 5,000 people missing. Scientists determined that climate change, including warming temperatures, glacier retreat, and permafrost thaw, destabilised the slope. The collapse released energy equivalent to a magnitude 5.2 earthquake and generated a flood that travelled at an average speed of 170 kilometres per hour. July and August 2026 were the warmest months on record in the area, with temperatures significantly above the 10-year average.
Researchers with World Weather Attribution concluded that the disaster was difficult to adapt to due to its complex and rapidly developing nature. Nepal's early warning systems were outpaced by the flood, with the first SMS warning sent 38 minutes after the initial collapse, by which time the flood had already reached the border.
Disagreement on the scale of missing persons
Reports differed on the number of people missing. Tempo.co stated that over 5,000 people remained missing. The Times of India reported at least 6,600 missing, while CNBC-TV18 stated 6,669 missing. EnviroNews Nigeria reported over 5,000 missing.
What the coverage left out
None of the left, centre, or right-rated reports mention the energy released by the collapse equivalent to a magnitude 5.2 earthquake. None of the left, centre, or right-rated reports mention the speed of the floodwaters reaching 170 km/h. None of the left, centre, or right-rated reports mention the specific findings of World Weather Attribution regarding the disaster's complex and rapidly developing nature making it difficult to adapt to.
Still developing. We have re-checked which outlets are covering this 3 times, most recently on 17 Sept 2026, 04:45, and will add the sides that appear.
How each side covered it
Our own reading of the reporting listed below, written from the outlets’ articles rather than quoted from them. The reasoning is set out on our methodology page.
Left
1 rated outlet
- The left-rated report from Tempo.co led with the death toll and the number of missing people. It detailed the scientific findings that climate change, including warming temperatures, glacier retreat, and permafrost thaw, destabilised the slope. The report quoted Walter Immerzeel, a mountain hydrologist, stating the event was not a single trigger but a combination of processes over years. It also quoted Friederike Otto, professor of climate science, who said that without faster action on fossil fuel emissions, more disasters of this scale would occur. The report highlighted that the disaster exceeded the limits of adaptation and that Nepal's early warning systems were outpaced.
Centre
3 rated outlets
- The centre-rated reports from Deutsche Welle and RTÉ both led with the link between climate change and the collapse. Deutsche Welle stated that decades of warming helped set the disaster in motion. RTÉ reported that climate change contributed to thinning glaciers and thawing frozen ground that held the mountain together. Both reports mentioned that the collapse killed nearly 1,400 people and left thousands missing.
Right
6 rated outlets
- The right-rated reports from Times of India, CNBC-TV18, Free Malaysia Today News, Latestly, Le Journal de Montreal, and Le Journal de Quebec all led with the certainty of climate change's role in the disaster. Times of India and CNBC-TV18 reported death tolls of over 1,400 and missing figures of 6,600 and 6,669 respectively. Free Malaysia Today News mentioned that July and August 2026 were the warmest months recorded locally and that heavy snowfall in late 2025 increased meltwater. Le Journal de Montreal and Le Journal de Quebec stated the flood was the result of climatic factors. Latestly also reported that climate change worsened the collapse.
Questions about this coverage
- How did the left and right cover Nepal mountain collapse killed 1,400, scientists link to climate change?
- Of the 10 outlets on this story carrying a published leaning rating, 10% are rated left, 30% are rated centre, 60% are rated right. Those percentages are shares of the rated outlets, not of every outlet that ran it, which was 13. The sections above set out what each side emphasised, in its own terms.
- Is Nepal mountain collapse killed 1,400, scientists link to climate change left or right?
- Too few of the outlets on this story carry a published leaning rating to say. 10 of them do, and this site does not characterise a field under 12: at that size one newsroom filing moves the share by ten points. The percentages above are the count as it stands.
- Is the coverage of Nepal mountain collapse killed 1,400, scientists link to climate change biased?
- Nepal mountain collapse killed 1,400, scientists link to climate change is one event reported by 13 outlets, and this page does not rate the story as biased or unbiased. What it publishes is the spread: which outlets ran it, where named rating organisations place each of them on the spectrum, and what each side chose to lead with. A leaning rating describes an outlet's record over time, not this article, and the two should not be run together.
- Which side is not reporting Nepal mountain collapse killed 1,400, scientists link to climate change?
- When we first saw this story, outlets rated left had barely covered it. Coverage accretes for hours after an event, so that is where to look rather than a verdict — the split above is the current count, and it is the one to read.
- Which outlets covered Nepal mountain collapse killed 1,400, scientists link to climate change?
- 13 that we know of, every one of them listed further up this page with a link to its own report and to what we hold on the publisher. Nothing here is a summary of somebody else's summary: the outlets are named so the original reporting can be read.
- How many people died in the Nepal and Tibet disaster?
- Nearly 1,400 people died in the mountain slope collapse and subsequent flash floods in Nepal and Tibet. Over 5,000 people were reported missing across the affected regions.
- What caused the mountain slope collapse?
- Scientists determined that climate change, including warming temperatures, glacier retreat, and thawing permafrost, destabilised the mountain slope. These factors combined with geological conditions to trigger the catastrophic event.
- How fast were the floodwaters moving?
- The floodwaters generated by the collapse moved at an average speed of 170 kilometres per hour. The initial collapse released energy equivalent to a magnitude 5.2 earthquake.
- Were there any early warning systems in place?
- Nepal had early warning systems, but they were outpaced by the speed of the flood. The first SMS warning was sent 38 minutes after the initial collapse, by which time the flood had already reached the border.
Read it at the source
13 outlets, grouped by the leaning a published rating gives them. Every headline links to the original; an underlined outlet name opens our profile of that publisher.
Left
1Centre
3- How climate change worsened Nepal’s deadly mountain collapse (opens INTELLINEWS in a new tab)
INTELLINEWS — is INTELLINEWS biased? Our profile of this outlet
- How climate change worsened Nepal's deadly mountain collapse (opens Deutsche Welle in a new tab)
Deutsche Welle — is Deutsche Welle biased? Our profile of this outlet
- Climate change led to Nepal landslide, scientists find (opens RTÉ in a new tab)
Right
6- 'No doubt' of climate change role in deadly China-Nepal flood: Scientists (opens Times of India in a new tab)
Times of India — is Times of India biased? Our profile of this outlet
- Climate change likely to have helped trigger Nepal glacier collapse, scientists say - Regional Media News (opens regionalmedianews.com in a new tab)
regionalmedianews.com — is regionalmedianews.com biased? Our profile of this outlet
- 'No doubt' of climate change role in deadly China-Nepal flood: scientists (opens CNBC-TV18 in a new tab)
- ‘No doubt’ of climate change’s role in deadly China-Nepal flood, say scientists (opens Free Malaysia Today News in a new tab)
Free Malaysia Today News — is Free Malaysia Today News biased? Our profile of this outlet
- How Climate Change Worsened Nepal's Deadly Mountain Collapse (opens Latestly in a new tab)
- The Deadly Flood in Nepal Caused by Increased Geological Instability Caused by Climate Change (opens Le Journal de Montreal in a new tab)
Le Journal de Montreal — is Le Journal de Montreal biased? Our profile of this outlet
Not rated
3- Climate change fingerprints found in catastrophic Nepal mountain collapse, say scientists - EnviroNews - latest environment news, climate change, renewable energy (opens EnviroNews Nigeria in a new tab)
EnviroNews Nigeria — is EnviroNews Nigeria biased? Our profile of this outlet
- Deslave in Nepal Was Caused by Geological Instability Aggravated by Climate Change: Study (opens El Economista in a new tab)
El Economista — is El Economista biased? Our profile of this outlet
- The Deadly Flood in Nepal Caused by Increased Geological Instability Caused by Climate Change (opens Le Journal de Quebec in a new tab)
Le Journal de Quebec — is Le Journal de Quebec biased? Our profile of this outlet
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