Worst - case scenarios as of 20 years ago are being considered , said scientists . ( CNN ) -- Findings announced at the end of a two - day conference in Copenhagen . Poor countries will be disproportionately affected by climate change .
Worst - case scenarios as of 20 years ago are being considered , said scientists . Findings announced at the end of a two - day conference in Copenhagen . Poor countries will be disproportionately affected by climate change .