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First kiss dates back 21 million years, say scientists

First kiss dates back 21 million years, say scientists 19 November 2025 Share Save Victoria Gill Science correspondent, BBC News Share Save Getty The researchers found evidence of kissing in …...

By BBC on December 04, 2025
Truth Block #16 of 16
AI Analysis Logic Quality: 82.0 Evidence: Coming Soon
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One previous piece of research on Neanderthal DNA also showed that modern humans and Neanderthals shared an oral microbe - a type of bacteria found in our saliva.

AI Analysis
Reasoning Score: 0.80
Truth Score: 0.85
Confidence: 0.90
Logic Quality: Strong
Reasoning Types:
evidential
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All Truth Blocks (16)
Block 1
First kiss dates back 21 million years, say …
64 No comments yet
Block 2
And now researchers have reconstructed the evolutionary origins …
64 No comments yet
Block 3
Their study suggests that the mouth-on-mouth kiss evolved …
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Block 4
The same research concluded that Neanderthals may have …
45 No comments yet
Block 5
The scientists studied kissing because it presents something …
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Block 6
Getty The scientists defined a kiss as mouth-on-mouth …
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Block 7
To ensure that they were comparing the same …
77 No comments yet
Block 8
In their study, published in the journal Evolution …
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Block 9
"Humans, chimps, and bonobos all kiss," explained lead …
82 No comments yet
Block 10
From that, she concluded, "it's likely that their …
45 No comments yet
Block 11
" "We think kissing probably evolved around 21.
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Block 12
5 million years ago in the large apes.
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Block 13
" In this study, scientists found behaviour that …
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Block 14
They focused on primates - and apes in …
77 No comments yet
Block 15
The same study also concluded that Neanderthals - …
4 No comments yet
Block 16
One previous piece of research on Neanderthal DNA …
82 No comments yet
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About This Truth Block

This is a minimal argument unit extracted from the original content. It represents atomic reasoning that can be evaluated independently.

Block Index:
16
Logic Quality:
82.0/100
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