The IPCC reports that global heating is [ already a source of danger ]( http://www.theguardian.com/environment/2014/aug/26/global-warming-irreversible-un-panel-report ) and it may be impossible to reverse.
Ссылка: https://stallman.org/archives/2014-jul-oct.html#27_August_2014_%28IPCC_report_on_global_heating%29