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Soil farming.
I sh!t you not, we need this. Topsoil in many parts of the world is leached of nutrients, or packed with chemical by-products of insecticide, herbicide, and fertilizers, or the topsoil has eroded away. Or, it's buried under concrete, asphalt, glass, and steel.
Soil farming for vertical farms, indoor cultivation at home, and replacing some other food growth options just makes good sense.
3D-Printed Houses
Hear me out. Right now, they're small and ugly as f*ck; but that's a design issue. Getting the materials and designs right can encourage mass adoption of sustainable design, waste sequestration, and abundant housing.
...american residential houses are neither expensive nor slow to construct and 3D printed houses aren't significantly cheaper nor faster: what's expensive is land and infrastructure and what's slow is permitting...
Why are you typing "sh!t" and "f*ck"? You're allowed to swear on the internet, you know.
Hahaha. I'm a teacher. It is better to err on the side of caution. Never know when I'm actually sleep-typing an email and forget to be cordial.
It's more about self-discipline and self-awareness rather than self-censorship. The self-censorship kicks in when I'm in the classroom, and some kid feels the need to act a damn fool.
Surely just don't use the swears at all if you want to be cautious? I doubt it's any less professional to type "f*ck" in a work email rather than "fuck"!
I curse in my sleep typing. And, I surely don't use the swears in my professional moments.
It takes curse words to get some people's attention or to confirm that I am not a robot. Whenever we get to the point that open, honest, civil conversation is once again the norm, I won't use them.
What is the material for 3d printed houses?
You know those pictures you see of beautiful wooden chalets in the swiss Alps etc?
Yeah they're not wooden, they're basically made by pouring liquid concrete in to a massive "mould" for the floor and walls, then covered with wood to make it pretty
The idea of 3d printed ones is the same, but without the hassle of making the mould
Concrete, usually.