Japan is planning to pledge a 26 percent cut in its greenhouse gas emissions from 2013 levels, ahead of a global summit on climate change this year, officials said Friday.
Global carbon emissions from forests could have been underestimated because calculations have not fully accounted for the dead wood from logging.
A group of top international experts on Wednesday urged governments to stick to their promises to combat climate change and said the aim should be to create a "zero-carbon society" by 2050.
Human activity has removed more than one-tenth of trees and plants from the Amazon rainforest since the 1960s, a study shows.
Canada revised its greenhouse gas emission data from 1990 to 2013 in a report Friday, showing it had higher carbon dioxide discharges each year, and a doubling of emissions from its oil sands.
Scientists are working to pinpoint the source of a giant mass of methane hanging over the southwestern U.S., which a study found to be the country's largest concentration of the greenhouse gas.
The US government on Tuesday formally pledged to reduce greenhouse gas emissions by 26-28 percent over 2005 levels within the next decade, ahead of a major climate conference later this year.
Mexico became Friday the first developing nation to submit targets for UN climate change talks in December, pledging that its greenhouse gas emissions will peak in 2026 before falling.
The recent increase in natural gas production could provide a bridge to a lower carbon future because it generates half the carbon dioxide (CO2) of coal when burned. However, natural gas that is leaked into the atmosphere ...
China's top weather official has issued a stark warning on climate change, saying that rising temperatures could have "huge impacts" on the world's most populous country, state media reported Sunday.