FACTArchive β†’
A lake exhaled and killed 1,746 people in their sleep. 🌫️
FACT
@fact5
Science Gone WrongJul 21, 2026

A lake exhaled and killed 1,746 people in their sleep. 🌫️

A lake exhaled and killed 1,746 people in their sleep. 🌫️ . . . On August 21, 1986, Lake Nyos in Cameroon burped up an estimated 100,000–300,000 tonnes of CO2 in a single silent cloud. It rolled downhill at 30 mph, hugging the ground. Villagers in Nyos, Kam, Cha and Subum never woke up. Survivors described a warm rotten-egg smell β€” then nothing for 36 hours. 3,500 cattle died standing.

See it on Facebook →← All facts
Source
https://en.wikipedia.org/wiki/Lake_Nyos_disaster
Share β†’ X Reddit WhatsApp Threads Facebook
Spot an error? Email hello@thefact5.com with a source β€” we correct visibly.
KEEP SCROLLING

More strange facts ✦

One missing filter helped kill at least 68 people. ☣️
FACT
@fact5
Science Gone Wrong
One missing filter helped kill at least 68 people. ☣️
On September 15, 1830, MP William Huskisson became one of the first widely reported railway fatalities when he was struck by Stephenson's Rocket at the opening of the Liverpool and Manchester Railway, dying that evening after his leg was crushed.
FACT
@fact5
Science Gone Wrong
On September 15, 1830, MP William Huskisson became one of the first widely reported railway fatalities when he was struck by Stephenson's Rocket at the opening of the Liverpool and Manchester Railway, dying that evening after his leg was crushed.
One dam unleashed 12.4 billion gallons before midnight. 🌊
FACT
@fact5
Science Gone Wrong
One dam unleashed 12.4 billion gallons before midnight. 🌊
A 42-mph wind made this bridge tear itself apart. πŸŒ‰
FACT
@fact5
Science Gone Wrong
A 42-mph wind made this bridge tear itself apart. πŸŒ‰
A 1-year-old has been 'blinking' in a Sicilian crypt for 105 years πŸ‘οΈ
FACT
@fact5
Creepy Discoveries
A 1-year-old has been 'blinking' in a Sicilian crypt for 105 years πŸ‘οΈ
The creator of the children's show Mr. Rogers was a Navy SEAL sniper with 25 confirmed kills, which is completely false - he was actually a pacifist minister.
FACT
@fact5
Ironic Twists
The creator of the children's show Mr. Rogers was a Navy SEAL sniper with 25 confirmed kills, which is completely false - he was actually a pacifist minister.
In Japan, there's a profession called 'Professional Mourner' where people are hired to attend funerals and cry convincingly for deceased strangers to make services seem better attended.
FACT
@fact5
Bizarre Human Behavior
In Japan, there's a profession called 'Professional Mourner' where people are hired to attend funerals and cry convincingly for deceased strangers to make services seem better attended.
A cat ran a Japanese train station and saved it from bankruptcy. πŸš‚
FACT
@fact5
Animal Oddities
A cat ran a Japanese train station and saved it from bankruptcy. πŸš‚
The Bone Wars of the 1870s saw paleontologists Othniel Marsh and Edward Cope sabotage each other's dig sites with dynamite to prevent rival dinosaur discoveries.
FACT
@fact5
Dark History
The Bone Wars of the 1870s saw paleontologists Othniel Marsh and Edward Cope sabotage each other's dig sites with dynamite to prevent rival dinosaur discoveries.
Swansea Jack kept diving in when humans were drowning. πŸ•
FACT
@fact5
Animal Oddities
Swansea Jack kept diving in when humans were drowning. πŸ•
Oscar the cat repeatedly arrived just before death. 🐈
FACT
@fact5
Animal Oddities
Oscar the cat repeatedly arrived just before death. 🐈
A man in Florida has legally married his smartphone in a ceremony with 200 guests after claiming he fell in love with Siri's voice.
FACT
@fact5
Bizarre Human Behavior
A man in Florida has legally married his smartphone in a ceremony with 200 guests after claiming he fell in love with Siri's voice.
🎲 Surprise me with another