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That making enough oxygen for one person, using electrolysis, requires 2000 kwh per day. That earth's forest area decreases by 13 000 000 hectares per year. A

That making enough oxygen for one person, using electrolysis, requires 2000 kwh per day. That earth's forest area decreases by 13 000 000 hectares per year. And that we add about 75 000 000 people every year.

mistermann 10y ago
Wow, did you read this somewhere in an article that goes into more interesting depth? 2000 kwh/day is like $200 bucks a day where I live, that's crazy! Now add in what's needed for the animals I eat. And that's just for the oxygen we consume? One of the more interesting things I've learned in quite some time. EDIT: You know, this is something that is so relate-able to the layman, it should be a widely used propaganda talking point.
- mistermann 10y ago
  And if you think about it more, if this number is correct, it shows in a very understandable way the magnitude of solar energy that the Earth receives - if this number is true, 100% sustainable energy is not only possible but should be incredibly easy once we develop the proper technology. I wonder, could global transmission possibly be an answer to the lack of storage problem?
lend000 10y ago
I always used to worry more about 'running out of oxygen' than CO2 emissions as I became aware of environmental science and the growing discussion about climate change. I think there are two main reasons scientists do not worry about it as much as originally seemed intuitive (to me): First, the raw amount of oxygen in the atmosphere is large enough that fluctuations can go unnoticed. To decrease the percentage of oxygen by 5% would result in many orders of magnitude more CO2 (proportionally) being released, such that the oxygen would be negligible. There's also the geology of it: rocks absorb and release oxygen over millions of years and add hysteresis to atmospheric composition. The amount of atmospheric gases trapped in the Earth's crust is significant and resists long-term changes.

mistermann 10y ago

Wow, did you read this somewhere in an article that goes into more interesting depth? 2000 kwh/day is like $200 bucks a day where I live, that's crazy! Now add in what's needed for the animals I eat. And that's just for the oxygen we consume? One of the more interesting things I've learned in quite some time. EDIT: You know, this is something that is so relate-able to the layman, it should be a widely used propaganda talking point.

mistermann 10y ago
And if you think about it more, if this number is correct, it shows in a very understandable way the magnitude of solar energy that the Earth receives - if this number is true, 100% sustainable energy is not only possible but should be incredibly easy once we develop the proper technology. I wonder, could global transmission possibly be an answer to the lack of storage problem?

lend000 10y ago

I always used to worry more about 'running out of oxygen' than CO2 emissions as I became aware of environmental science and the growing discussion about climate change. I think there are two main reasons scientists do not worry about it as much as originally seemed intuitive (to me): First, the raw amount of oxygen in the atmosphere is large enough that fluctuations can go unnoticed. To decrease the percentage of oxygen by 5% would result in many orders of magnitude more CO2 (proportionally) being released, such that the oxygen would be negligible. There's also the geology of it: rocks absorb and release oxygen over millions of years and add hysteresis to atmospheric composition. The amount of atmospheric gases trapped in the Earth's crust is significant and resists long-term changes.