Guardian: Before the press conference begins at 9am local time (about 25 minutes from now), we can take a look at what we already know. There have been several drafts of the report leaked already, giving fair indication of the warnings to come from the IPCC. According to the most recent leaked draft, the effects of climate change are already being felt "on all continents and across the oceans." An already approved section reveals Arctic ecosystems and warm water coral reefs are already experiencing "irreversible...