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Nell Greenfield Boyce

๐Ÿ‘ค Speaker
See mentions of this person in podcasts
762 total appearances

Appearances Over Time

Podcast Appearances

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

But I mean, she does notice lots of different interesting things.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

Like there are some species that can go one way or another.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

Right.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

It's not always yellow.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

It's not always red.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

And, you know, she notices this a lot in parking lots.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

With her students, she's actually done like parking lot science.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

Like she actually was looking at different colored willow oaks outside a home goods store, for example.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

I mean, it's a very convenient field site.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

And what did she find?

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

Well, she told me the red trees had fewer scale insects.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

She and her students looked at nitrogen levels, too, and they didn't see any difference there.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

But, you know, that's just one little study, right?

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

I mean, there's tons more work to do.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

Yeah.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

Yeah, it's really interesting, right?

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

I mean, she's been studying sweet gums.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

She says these are trees that turn all the autumn colors, like including red.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

Yeah, yeah.

Short Wave
Fall foliage is still a mystery: Why do some leaves turn red?

I mean, you've got different species.