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It’s pretty amazing how effective trees are at cooling street temperatures. Also capture some particulates.
The key is to make sure they are looked after.
the key was the plant them 40 years ago, but instead they doubled down and increased densification.
Density isn't the problem. It's a lack of green space (which is possible with density).
The alternative is more sprawl / single family housing which would generate even more concrete cover and increase surface temperatures.
Yeah not every city needs a Central Park size green space nor do people need lawns for everyone. Trees along the sidewalks, hedges in front of buildings… Look at the rich part of your nearest city. It’s probably fairly dense except for its park, but it’ll be shaded and have room for people to grow some plants on their porch or in front of it or somewhere like that. Space that would otherwise be bare concrete.
There’s also rooftop gardens but that’s a whole other thing.
You'll be surprised how fast a decent-sized tree can start producing useful shade. Put in something about 6ft and 5 years later it will be making a difference.
true depending onnthr type of tree for sure !