On 11 April 2014 13:08, Chris de Morsella <[email protected]> wrote:
> ------------------------------ > *From:* LizR <[email protected]> > *To:* [email protected] > *Sent:* Thursday, April 10, 2014 11:43 PM > *Subject:* Re: Climate models > > On 11 April 2014 11:41, Telmo Menezes <[email protected]> wrote: > > On Thu, Apr 10, 2014 at 4:59 PM, Alberto G. Corona <[email protected]>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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
