00:03
Hi there.
00:04
This question is about an urban heat island and ways to reduce it.
00:10
Well, let's talk first about what an urban heat island is.
00:14
An urban heat island refers to the effect where urban areas are hotter than the surrounding non -urban areas.
00:46
In other words, in a city, it's going to be hotter, and especially at night, you'll notice the difference more at night as the area.
00:53
That is not urban, the more rural areas around the city cool off, but the city does not cool off nearly as much.
01:03
And the whole reason for the urban heat island is, of course, due to humans.
01:11
There's very few plants, trees, there's concrete and asphalt, which absorbs heat during the day and holds it and reflects it.
01:22
There's all sorts of humid activity, putting heat into the air.
01:25
So this question wants to know which of these is not a way to reduce this effect.
01:34
All right.
01:35
The first one talks about more rooftops covered with plants.
01:40
Well, that would be a good way to reduce it because, one, plants do have a cooling effect.
01:50
And two, as opposed to an asphalt roof, which is just going to absorb that heat, the plants are going to help reduce the temperature...