I think the thing to take from the discussion of O2 increases being dangerous should be that any rapid (geologically) changes in the composition of the air are dangerous to species which have adapted to specific conditions over long periods. CO2 is the immeadiate threat.
Bill C. ----- Original Message ----- From: "murdoch" <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Tuesday, November 05, 2002 8:51 PM Subject: Re: [biofuel] Re: [mdiaircar] Nuremberg Inventor's Fair > >>I don't know if this theory is born out, but I also think of this when > >>I see Oxygen percentages not even discussed or measured commonly. > > > >Similar to your thoughts on hydrogen. I'd also like to know the answer to this. > > > >I've seen the release of O2 into the Earth's atmosphere described as > >the greatest catastrophe for life that ever happened, much worse than > >the fate of the dinosaurs. It wiped out just about everything. Life > >was mostly anaerobic prior to that, but for a small number of obscure > >and struggling aerobes - weirdos that lived on explosive gas. > >Suddenly there was only room for the weirdos, everyone else perished. > >Now we all breathe this poisonous explosive stuff and think it's > >normal. > > Well, I haven't seen that way of discussing the release of greater O2 > percentages into the atmosphere. It was put forth in the context of > the great mystery as to why there is not more of a historical fossil > record of a wider diversity of life (land life?) up until a few > hundred million years ago. Trees, for example, I don't think they're > more than a few hundred million years old. And many creatures, we > have fossil records of them, but they do not really start in abundance > up until a certain point? > > In any case, when I heard the presentation, it really seemed to make > sense to me. The idea was that at various points large quantities of > O2, somehow within the EArth, were released, and with these releases, > finally they resulted in a bit of a change. I don't know if it was to > the climate or to the suitability of certain breathing biochemistry > approaches or what. > > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuels list archives: > http://archive.nnytech.net/ > > Please do NOT send Unsubscribe messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
