UN Report Said Zero Emission Be Realized by 2100

A UN report recently released on November 3 said that, in order to avoid the irreversible situations, countries should realize zero emission in terms of curbing climate change. The report showed that the international greenhouse gas emission should reduce by 40% - 70% by 2050 in order to ensure the temperature increase of less than 2 degrees centigrade; the emission should be zero in 2100 or even lower.