Steven Novella

Just a behavior.

And that wasn't what was studied.

They just want to say, if this is the case, then we should find that they are more representative in the next generation.

And they are.

So it supports the hypothesis that they are.

They are specifically selecting for this cognitive intelligence.

And birds in general, so the idea is that female birds are more invested in their chicks than the males are, right?

Because often they have to do more of the... It's not true across the board, but for those species where there's a lot more of... The stakes are higher for the females than for the males, right?

In those species, the females are way more selective of the males than the males are of the females.

Males just spread it around.

The females are like, I've got to pick the best sperm I can because I have a lot riding on my chicks.

And those are the species where the men go through that elaborate.

The males are going to have elaborate plumage or elaborate mating routines or nesting routines or whatever.

This is just sort of one manifestation of that.

I couldn't resist that.

Yeah, females, more intelligent males.

All species would benefit from that.

not intelligent people out there yeah i mean and you know there's a huge whole psychological branch about what a human male and female mate selective behavior and why do men think that driving a you know a fast car whatever is going to help them and does it you know and all that sort of stuff and

All right, let's go back to number one.

Researchers have developed a synthetic fabric that is highly insulating in cold temperatures but is heat-releasing at room temperature or warmer.