I don't think that is the case. It has been widely documanted that Chimps also share babies. Groups of Chimps where no baby are present, tend to have a lot more inner figthing. Mothers often let others chimps hold their babies. On avrage the degree of "shareing" it's overall lower, usualy only realted femeles babysit babies, but it's definatly still present.
How does an abundance of calories make the brain bigger in successive generations? I'm sure there is a more nuanced explanation in the research, but it would be nice to see the proposed mechanism explained here.
Bigger brains require more energy, so if food was scarce, evolution would have favored individuals who required less energy (i.e. had smaller brains). Once food sources were more stable, the amount of energy needed for survival no longer mattered, so evolution would then have favored other traits - like high intelligence and bigger brains - that are advantageous.
If that's the key, why are animals like Lions not on our level? They should have gotten smarter too since they share food, raise there young together, stay in groups and help weaker parts of the pride out.
Just because two species evolved the same traits doesn't mean they'll lead to the same thing. There's no pressure for lions to become smarter nor any way for them to use tools
Or, why poor black children (and poor white, green, etc children) need the same sharing (well funded communities, schools, unbiased justice system, etc) from which many middle and upper income white children benefit.
Interesting and entertaining presentation.
I don't think that is the case. It has been widely documanted that Chimps also share babies. Groups of Chimps where no baby are present, tend to have a lot more inner figthing. Mothers often let others chimps hold their babies. On avrage the degree of "shareing" it's overall lower, usualy only realted femeles babysit babies, but it's definatly still present.
How does an abundance of calories make the brain bigger in successive generations? I'm sure there is a more nuanced explanation in the research, but it would be nice to see the proposed mechanism explained here.
Bigger brains require more energy, so if food was scarce, evolution would have favored individuals who required less energy (i.e. had smaller brains). Once food sources were more stable, the amount of energy needed for survival no longer mattered, so evolution would then have favored other traits - like high intelligence and bigger brains - that are advantageous.
If that's the key, why are animals like Lions not on our level? They should have gotten smarter too since they share food, raise there young together, stay in groups and help weaker parts of the pride out.
yeah but they lack hands and thumbs
Just because two species evolved the same traits doesn't mean they'll lead to the same thing. There's no pressure for lions to become smarter nor any way for them to use tools
I like the news l like monkey sleeping thank you NPR News
😎
So dogmatic and religious
First
Why black kids need both parents
Sure, but congrats for not letting it hold you back!
Yeah Mr White, you are very brave in sharing your IQ here
Or, why poor black children (and poor white, green, etc children) need the same sharing (well funded communities, schools, unbiased justice system, etc) from which many middle and upper income white children benefit.
National Propaganda Radio
NPR and PBS are good
Some of the few sane things remaining in this country