Hacker News with Generative AI: Human Biology

What's so special about the human brain? (nature.com)
Torrents of data from cell atlases, brain organoids and other methods are finally delivering answers to an age-old question.
The mystery of why left-handers are so much rarer (2016) (bbc.com)
Relatively few people are lefties, and it’s a puzzle why. Still, the science of handedness is revealing fascinating insights about you – from how it could change the way you think, to the fact that you might be ‘left-eared’.
The human heart shows signs of ageing after just a month in space (nature.com)
Over the course of just one month in space, engineered human heart tissue got weaker, its ‘beating’ patterns became irregular and it underwent molecular and genetic changes that mimicked the effect of ageing1.
Puberty Hasn't Changed Since the Ice Age (nautil.us)
The blueprint was set at least 25,000 years ago.
Scientists find humans age dramatically in two bursts – at 44, then 60 (theguardian.com)
Evidence for ~12-h ultradian gene programs in humans (nature.com)
Human reproduction comes at the expense of faster aging and a shorter life (biorxiv.org)
Toxic Compounds in Everyday Products Are Disrupting Vital Human Proteins (scitechdaily.com)
Ask HN: Most accurate scientific book on human sleep? (ycombinator.com)
'Each person has a unique smell: this is our olfactory footprint' (elpais.com)
Humans May Be Able to Grow New Teeth Within Just 6 Years (popularmechanics.com)
How do our brains adapt to control an extra body part? (cam.ac.uk)
Microplastics found in every human testicle in study (theguardian.com)