more scary stuff

[Paul1980au]

You know i think improving technology levels in terms of recycling and energy efficent technologies will slow these problems i mean by banning CFCs the ozone hole is recovering. If it becomes enough of a problem science and commercial opportunities will exist and answers will be found - hydrogen energy technology is the next boom tech and combine biotech, nanotechnology and increasing computing technolgoy to run science simulations etc this will aid in improving the situations.

[Fyron]

The ozone hole was caused by a volcanic eruptions in Antarctica during the 1980s and 1990s! It was most certainly not _caused by_ our pollution. The reason why the hole has decreased in size is because the effects of the 1991 eruption of Mt Pinatubo have slowy been filtered out.

http://www.gsfc.nasa.gov/topstory/20...04volcano.html

http://www.theozonehole.com/ozonehole2001.htm

http://www.antarctica.ac.uk/About_BA...eruptions.html

http://randalcarr.tripod.com/pinatubo/

[ February 12, 2004, 01:41: Message edited by: Imperator Fyron ]

[PvK]

Hmm, at those links I see links of erruptions to ozone depletion, but also:

First site (NASA):

"Climate change combined with aftereffects of large volcanic eruptions will contribute to more ozone loss over both poles," Tabazadeh said. "This research proves that ozone recovery is more complex than originally thought."

"... the early and rapid growth of the Antarctic ozone hole in the early 1980s may have been influenced in part by a number of large volcanic eruptions ..."

Second site (ozonehole.com):

"However, man-made chemicals such as CFCs or chlorofluorocarbons are now known to have a very dramatic influence on Ozone levels too. CFCs a were once widely used in aerosol propellants, refrigerants, foams, and industrial processes."

Third site (Cambridge):

"despite the provisions of the Montreal Protocol, the atmosphere will contain enough CFCs that the ozone layer will be at risk of other events of severe ozone loss at mid-latitudes for at least fifty years."

Fourth site looks to be only about volcanoes anyway.

That is, it would be easy to misinterpret what Fryon said, to think that human pollution is not a contributing cause to ozone depletion. It would seem it is a cause, in addition to volcanoes.

PvK

[PvK]

Personally, I'd say the loss of petroleum and nuclear fuel would be good goals, if done without a catastrophe. They're both pretty foul. So would the reduction in the human population and land use by a factor of 10 or more. Hopefully, we won't have to destroy all our freedom and civilization to do so (although some of our civilization would be nice to lose, too, in my opinion). Also, although especially in the USA, we are massively car & gasoline oriented, I think that's also not necessary, nor desirable. I much prefer pedestrian-oriented communities, with as little exhaust pollution as possible.

PvK

[narf poit chez BOOM]

divide everybody into family's of four. divide the araible land of the us and canada among them. i'm sure there's enough for everyone to live off, just not feast on. and that leaves the rest of the world.

[AMF]

I'm glad someone came forth to say the emperor has no clothes. I avoided it becuase of the risks of bringing up politics in this very important issue which should NOT be political which always seems to be...and for the wrong reasons.

Shutting up now.

Originally posted by PvK:
Hmm, at those links I see links of erruptions to ozone depletion, but also:

quote:

---

First site (NASA):

"Climate change combined with aftereffects of large volcanic eruptions will contribute to more ozone loss over both poles," Tabazadeh said. "This research proves that ozone recovery is more complex than originally thought."

"... the early and rapid growth of the Antarctic ozone hole in the early 1980s may have been influenced in part by a number of large volcanic eruptions ..."

Second site (ozonehole.com):

"However, man-made chemicals such as CFCs or chlorofluorocarbons are now known to have a very dramatic influence on Ozone levels too. CFCs a were once widely used in aerosol propellants, refrigerants, foams, and industrial processes."

Third site (Cambridge):

"despite the provisions of the Montreal Protocol, the atmosphere will contain enough CFCs that the ozone layer will be at risk of other events of severe ozone loss at mid-latitudes for at least fifty years."

Fourth site looks to be only about volcanoes anyway.

That is, it would be easy to misinterpret what Fryon said, to think that human pollution is not a contributing cause to ozone depletion. It would seem it is a cause, in addition to volcanoes.

PvK

---

[Fyron]

It is certainly a contributing factor, just a rather minor one. Volcanic eruptions put out many orders of magnitude more pollutants into the atmosphere than humans ever have. They have a much greater effect upon the ozone than we do.

Originally posted by alarikf:
I'm glad someone came forth to say the emperor has no clothes. I avoided it becuase of the risks of bringing up politics in this very important issue which should NOT be political which always seems to be...and for the wrong reasons.

What are you talking about? We are certainly not helping the environment, we just did not cause the hole in the ozone layer over Antarctica. That was caused by massive volcanic eruptions.

[ February 12, 2004, 16:46: Message edited by: Imperator Fyron ]