sending earth elements into space

[justwondering]

I have often wondered if we can afford to export our prime survival chemicals (oxygen,water). into space . There is only a finite amount of that stuff on our planet; once it's gone, it's gone.

[N O M]

If you compared the amount of material sent into spage in the last 50 years with what has been added via meteorites, you would find there has been a net increase.

We would have to send an enormous amount of material into space to actually make a difference. By the time this ever happens, we will also be importing materials from the moon, comets and asteroids.

[kaneda]

Oxygen can be mined in space from various minerals like oxides. The asteroid Ceres has more FRESH water than Earth has and relatively speaking is not that far away (in the asteroid belt beyond Mars.)

With global warming, our problem may be that there is too much water (as water).

[ardyn]

Seams to me that the "chicken littlest" of the so called scientific community are the only ones that the media seams to listen to. If the predicted rise of 2 degrees Celsius by the end of the century should occur, it may be a good thing. If you are a Green-lander it would bring the temperature back to where it was when the vikings first settled Greenland in the 10th century. It was called "Greenland " because it was green. The southern forests and fjords reminded them of their homeland.
For the last 300 years or so, since records of sunspot activity has been kept there has been a corresponding link between sunspot activity and the rise and fall of earths temperature.
As far as greenhouse gases are concerned mans contributions are paled to insignificance when compared to all the natural sources. Its a small fraction of whats released thru volcanic activity alone, both on the earths surface and under the seas. Add to this all thats released by biological activity and other natural out-gassing by the earth.

[kaneda]

As I understood it, Greenland was called that to get migrants to go there. Had they called it Bloodycoldland, not many people would have gone there.

While Greenland may warm up nicely, many currently hot places may become too hot to support people with regular temperatures of over sixty degrees in summer in parts of southern Europe and the southern States.

The recent survey by 2500 climatologists and experts from 130 countries said global warming was 90% down to Man, and they had all the evidence.

[SIP]

Really he's right both the Norse and the Vikings colonized and farmed on Greenland. They know because Archaeologists found the remains of farmed soil and sheep and goat dropping frozen beneath the ice.

Honestly I don't think I know enough about global warming to comment, but honestly so far from what I've heard it sounds like crackpot puesdo science pushed by politics to me. I mean is the world warming , well ya 1 degree in the next 100 years, but so far no ones introduced any good evidence to me so my verdict is up in the air.