Text 7368, 112 rader
Skriven 2005-10-01 06:34:38 av Robert Comer (1:379/45)
   Kommentar till text 7367 av Mark (1:379/45)
Ärende: Re: Dial down the Sun?
==============================
From: "Robert Comer" <bobcomer_removeme@mindspring.com>

>I guess I should restate that as adaptation is our only real hope and given
>that one theory of the cause is an asteroid hit:

Adaption will cost even more the longer we put things off, but it could work is
we also work to mitigate the threat.

The Permian asteroid was near that time, it's true, but it wasn't near big
enough to cause that kind of damage, certainly not as big as the one that wiped
the dinosaurs, and that extinction was far les than the Permian one. And, an
asteroid impact would cause cooling, not heating, and we know the temperatures
went up.

> I'm optimistic about our chances of prevention in that instance, by
> destroying or diverting the asteroid, unless it happens in the near
> future.

If we don't put off inventing the tech until it's too late.

- Bob Comer


"Mark" <nomail@hotmail.com> wrote in message news:433e7e7b$1@w3.nls.net...
>I guess I should restate that as adaptation is our only real hope and given
>that one theory of the cause is an asteroid hit:
>
> http://www.nationalgeographic.com/ngm/0009/feature4/fulltext.html
> "An enormous asteroid impact is the prime suspect of Gregory Retallack, a
> geologist at the University of Oregon. The collision would have sent
> billions of particles into the atmosphere, he explains. They would have
> spread around the planet, then rained down on land and sea."
>
> I'm optimistic about our chances of prevention in that instance, by
> destroying or diverting the asteroid, unless it happens in the near
> future.
>
>
> "Robert Comer" <bobcomer_removeme@mindspring.com> wrote in message
> news:433e247d@w3.nls.net...
>> Not if we don't have anything to eat.
>>
>> Again, I point you to the Permian extinction, look it up -- we don't have
>> nowhere near the tech to adapt to that without trying to stop it before
>> it happens.
>>
>> - Bob Comer
>>
>>
>> "Mark" <nomail@hotmail.com> wrote in message
>> news:433e0a4e$1@w3.nls.net...
>>> IOW, further proof that us puny little humans trying to control the
>>> atmosphere of our little sphere, or attempting to block the power of a
>>> sun, is just so much poppycock. We'll adapt just fine over time, if
>>> necessary <and I doubt very much that we'll really have to grow webbed
>>> feet>
>>>
>>> "Rich Gauszka" <gauszka@hotmail.com> wrote in message
>>> news:433e0889$1@w3.nls.net...
>>>>
>>>>
>>>> http://news.yahoo.com/s/space/20050930/sc_space/studysunschangestoblamefor
partofglobalwarming
>>>>
>>>> Increased output from the Sun might be to blame for 10 to 30 percent of
>>>> global warming that has been measured in the past 20 years, according
>>>> to a new report.
>>>>
>>>> Increased emissions of carbon dioxide and other heat-trapping gases
>>>> still play a role, the scientists say.
>>>>
>>>>
>>>> But climate models of global warming should be corrected to better
>>>> account for changes in solar activity, according to Nicola Scafetta and
>>>> Bruce West of Duke University.
>>>>
>>>>
>>>> The findings were published online this week by the journal Geophysical
>>>> Research Letters.
>>>>
>>>> Many questions remain, however. For example, scientists do not have a
>>>> good grasp of how much Earth absorbs or reflects sunlight.
>>>>
>>>>
>>>>
>>>> http://www.livescience.com/technology/050627_warming_solution.html
>>>>
>>>>
>>>>
>>>> wild idea to combat global warming suggests creating an artificial ring
>>>> of small particles or spacecrafts around Earth to shade the tropics and
>>>> moderate climate extremes.
>>>>
>>>> There would be side effects, proponents admit. An effective
>>>> sunlight-scattering particle ring would illuminate our night sky as
>>>> much as the full Moon, for example.
>>>>
>>>> And the price tag would knock the socks off even a big-budget agency
>>>> like NASA: $6 trillion to $200 trillion for the particle approach.
>>>> Deploying tiny spacecraft would come at a relative bargain: a mere $500
>>>> billion tops
>>>>
>>>>
>>>
>>>
>>
>>
>
>

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