On 11 April 2014 13:08, Chris de Morsella <cdemorse...@yahoo.com> wrote:
> ------------------------------ > *From:* LizR <lizj...@gmail.com> > *To:* everything-list@googlegroups.com > *Sent:* Thursday, April 10, 2014 11:43 PM > *Subject:* Re: Climate models > > On 11 April 2014 11:41, Telmo Menezes <te...@telmomenezes.com> wrote: > > On Thu, Apr 10, 2014 at 4:59 PM, Alberto G. Corona <agocor...@gmail.com>wrote: > > neither climate can be changed by little ants like us, > > Of course it can. We have nuclear weapons. > > We have already done so, using little more than cars, planes, ships, > trains and power stations. > > In fact we have already done so using nothing more than muscle power. Look > at how many areas -- including the fertile crescent -- have been > desertified by human presence. We probably began affecting climate when we > discovered fire and began large scale burns to clear brush and move game > animals towards hunters, by increasing the area of grasslands. One should > not forget that the salt pan deserts of southern Iraq were once the > blooming agricultural heartland of ancient Sumeria. And that northern Iraq > and much of the entire region was covered by ancient cedar forests. > Humans have been altering the face of the earth on a large scale since at > least as far back as the beginning of agriculture and I suspect even much > earlier than that when we learned to control fire and began to use it to > shape our environment. > > Yes, it's quite possible that agriculture has changed the climate. I don't know if any studies have been done on this. It's somewhat more obvious with industry, which has raised atmospheric CO2 something like 50% in 3 centuries. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
