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Well Trees don't make as much money for rich people who own everything and Trees make hot days more comfortable for homeless people
Algea is a much much better oxygenator with lower maintainence, people don't seem to notice how fast cities can kill trees.
You don't need to put algae in cities. They can be basically anywhere to absorb CO2.
Trees in cities tend to be carefully chosen for the environment. Are we in a climate where we need to put salt on the road in the winter? Choose trees that can tolerate some salt in the ground.
Maybe stop putting salt down in winter??? Who does that still they need to stop.
As much as it sucks, until we reduce the need for cars, northern rural areas are going to need to use salt for roads to be usable. Of course, if global warming gets worse it won't be an issue
"Global warming" doesn't mean warmer winters. It means extreme summers and winters and nothing in between, with a global temperature raising.
Besides the already stated fact that global warming will only make winters worse, there are better ways like cleaning the snow (ok, that's radical) or using abrasives like sand or gravel.
Clearing the snow doesn't fix the ice that snowplows leave behind and gravel/sand is a straight placebo. That's why the roads get salted/brined.
My major metropolitan City kills New trees literally every year.
And the oceans are incredibly vast, so they provide most of the world's oxygen! Obviously it's hard to get a precise number but 50-70% is the accepted range.
There are many reasons to plant trees in the city but local oxygen supply isn't one of them. Mostly trees look nice, and make people feel better by their presence. They also have a significant cooling effect, something a steamy tank full of warm algae definitely won't help with on a summer day.
Local oxygenation is important, conversion at the source pretty much always is.
Moreover it doesn't at all imply in lue of trees and importantly oxygenate at the same rate day and night since they're independently lit ideally 24/7/365.
My first thought is you can embedd this inside buildings rather trivially
Walls made out of these would be cool
We keep killing the ocean then asking why we need those stupid plants.
even so, I bet the billionaires were ecstatic about how it doesn't give any shade on hot days
I think it has more to do with the fact trees require more maintenance, like raking up leaves and fruit, and having to saw off branches.
Also those roots can break pavement and pipes.
You really think those massive, experimental water tanks won't require more maintenance, because you have to trim trees once ever few years? Or because their roots might grow too much?
Ok, I like trees as much as the next person, and much prefer them over these algae tanks.
But what about these "massive experimental water tanks" do you think will damage the infrastructure beneath and around it like tree roots do?
For now, no. In the near future, probably
Well of course, you can't give working class people any money for working, you can only give them a slave-wage. That's why all manufacturing was outsourced to very underdeveloped countries when NAFTA was first put into place.
You can easily get away with exploiting people who have no other choice but to work for a dollar per year, but it's much more difficult to do that to someone's neighbor in their community.
We just have to remove the roof from that thing so it won't be shadowy, and make a wall in the bottom so it can't be used to lay down.