Dr. Glen Jeffery

And they planted these trees and they went back, I think two or three years later and measured these metrics.

and they got a significant reduction.

Now, that is interesting, right?

So my big question, and it's one that I'm trying to get ethics to do now, is what happens to your blood as you pass from a concrete building, sit you in a concrete building for five hours,

It's horrible.

You're getting no infrared light.

You've got infrared blocking windows.

You've got LEDs.

What happens when I wheel you into a park?

What happens when I wheel you into woodland?

You know you feel so much better.

Everybody says, I feel so much.

Well, if you feel better, something's happening.

What is happening?

So it's not only about the light that we have in the built environment, it's about the glass that we have in the built environment, and it's about plant matter.

plant matter, should we be planting plants, for instance, on the north side of buildings, which are tall because they will hit the light level and they have the capacity to reflect it back through into the building?

Yeah, I completely agree with you.

And we weren't sticking our head above the parapet three or four years ago, but we are now.

We think this is...

a significant public health problem.