The latest report by the United Nations panel on climate change may not offer any new surprises concerning the threats posed by global warming, but it does remind us that doing too little, or waiting too long, to cut the emissions of heat-trapping gases could be disastrous.
The onus is now on governments, including Japan, to expedite talks for a new framework to reduce the emissions in time to avert "irreversible" damage to the global environment.
In an assessment issued Nov. 2, the Intergovernmental Panel on Climate Change said emissions of greenhouse gases such as carbon dioxide need to be cut to "near zero or below" by the end of this century for the world to escape the "irreversible detrimental impacts" of climate change on people's lives and the environment. To meet the internationally agreed goal of keeping the average rise in global temperature since the start of the Industrial Revolution to within 2 degrees Celsius, the world needs to reduce emissions between 40 and 70 percent from 2010 levels by 2050, the report said.