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> No, they don't "grow under some of the most extreme conditions possible"; consider the meaning of the phrase "tree line". It is routine for conditions to be t
by hahainternet 14y ago
> No, they don't "grow under some of the most extreme conditions possible"; consider the meaning of the phrase "tree line". It is routine for conditions to be too extreme for trees to be feasible.
'Routine' is a strong word. You'll note that tree lines exist at significant altitudes commonly on mountains. Typically places that trees cannot grow are also places that humans find difficult.
Demonstrating that trees are incapable of growing on buildings would of course shut me up, but the author didn't do that. What they did was to say 'trees wont grow on buildings'. A bare assertion. One counteracted by pictures in this very thread.
- snowwrestler 14y ago> Typically places that trees cannot grow are also places that humans find difficult. The windows on tall buildings don't open, which is not a coincidence. Humans can't survive for very long 50+ stories in the air either.
- hahainternet 14y ago> The windows on tall buildings don't open, which is not a coincidence. Humans can't survive for very long 50+ stories in the air either. 50+ stories is significantly less than the difference between my altitude and the altitude of many perfectly happy civilisations. The reason windows don't open is that there are significant issues with cooling and regulating air pressure in a building that large. It has little to do with anything like oxygen concentration or even temperature.
- snowwrestler 14y agoThe issue with tall buildings is not absolute altitude, the issue is elevation above the local boundary condition in the atmosphere.