The human brain is not a single organ, but two separate systems that evolved independently before fusing together, according to groundbreaking new research. … Armed with the knowledge of how hindbrain cells uniquely form, the team has successfully turned human stem cells into becoming functional hindbrain motor neurons in a lab for the first time.



That one goes way back … to the 90s, maybe even the 80s, I think I first saw it in Harper’s Magazine. Great stuff. I tend to forget about it for years until something (like this) reminds me of it and I find a copy online to read. Meat problems.
In all honesty I introduced my kids to this story the way some parents introduce religious stories. But this one has real insight.