. >> douglas herbert joins me now. this report has been described as the most comprehensive assessment to date on the impact of climate change, also the most alarming we have heard by far. >> seven years ago, they've mentioned the word risk seven times -- they mentioned the word risk seven times. now the word comes up 230 times, an average of 5.5 mentions per page in the 44-page summary of the report. this report is saying two things -- the impact from climate change is coming more frequently , happening faster. it seems to be speeding up. we have seen killers heat waves in the u.s., droughts in australia, catastrophic flooding from mozambique to thailand to pakistan and you see wildfires across russia, the u.s. a well -- as well. it seems to becoming much more faster and furiously than anyone ever predicted. this report is saying that it is not that we didn't see all of the effects of climate change and we have seen the melting polar ice caps, the forest fires, the heat waves, the isughts, but because it happening so