Are Humans Still Evolving?
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- Опубліковано 18 тра 2022
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We’re living longer. Dying less. Human life expectancy has doubled in just a couple centuries. Machines and meals and medicines keeping us alive long past the age where we can make babies. Does this mean our species is no longer under the influence of natural selection? Have humans stopped evolving?
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I'm definitely still evolving. This isn't even my final form!
In a lot of cases the Bajou people lose their hearing as they get older due to the constant diving under water. So they have this amazing ability to hold their breath under water for longer than anyone else but the constant pressure changes damage their hearing overtime so they essentially traded their hearing for the ability.
I’ve evolved into a couch potato.
Absolutely love "Civilization is filthy, y'all."
I imagine a parallel universe were he just drowns at the beginning and the whole video is just him with he's head in the water bowl
"Humans die less"
Not just the Bajaus, the Orang Laut (we call them the Sekaks in my island) of Sumatran eastern coasts and the Mokens of southern Myanmar have this adaptation too. The Mokens even take it further. They can see clearly underwater without the help of goggles.
The thing about life expectancy is a bit distorted. Yes, there were more younger deaths earlier in history, but most of them were at a very young age (young children) and countered by higher birth rates. - It doesn't devalidate the point of there being natural selection (children dying from some germs, thus potentially breeding a higher resistance to it in the survivors), but makes the impact seem more profound than it is.
My favorite part was when evolution said "It's carcanization time" and then carcanized over everyone.
5:50
The LOSS of certain kinds of natural selection can also have an effect on our genetics! For instance, I've heard that the average size of babies' heads at birth is going up! It used to be that a baby with a big head could not fit through the birth canal, causing death for both child and (usually) mother. That was a natural selection pressure that kept the number of people with big-headed-baby genes low in the population. But now, with safe c-section births, these babies can be born! This means a larger number of people in the population can now have genes for big-headed babies.
I’ve been asking the same question.
I only discovered this channel recently after stumbling upon the crossover with SpaceTime and Eons on the origins of life- but I am now hooked. Great content presented in a fun and informative way. Thank you for all the hard work.
So if a Himalayan has a kid with an Indonesian, that kid might be able to hold their breath for 16 min with little effort? Larger spleen + low oxygen breathing = “I only need to breathe once every 15 minutes?”
If it wasn't for modern medicine, I probably wouldn't have survived my childhood. I spent a lot of time in hospitals and took lots of antibiotics as a child, and now I take a medication that saves my liver from inflammation and possible cancer, which actually ended up killing my grandmother who has the same liver disease. I wonder if medicine is allowing some genetic disorders to be passed on since more children survive?
I am a mutant. We found that my dads side of the family carried genes for extra muscle strands. Out of 3 sons, I was the one that inherited this gene which my brothers always found weird growing up.
When was the last time I was worried about getting eaten by a tiger on the way to lunch?
Mark Zuckerberg on the thumbnail.
This was a really good presentation. However it seems as if the topic(s) covered were rather broad. Could the production team consider going a little deeper on each of these sub points? Perhaps a small series all based on this one subject? I found myself fascinated with this and want to know more.
Asking "are humans still evolving?" Is like asking water if it's wet, or asking if snow will melt in a fire.