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We need to build an Yggdrasil
(fedia.io)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
Oh, we could probably create giant trees with selective breeding and gene editing. But those trees would still need hundreds of years to grow (and that's a good thing, since it would store CO2 while growing) and if there are problems with the gene editing we would only notice after decades.