
A file photo of United Nations logo.

Emission of Greenhouse Gases such as Carbon dioxide and others contribute a lot to climate change. This is a great problem before humankind indeed

Emissions due to human activities

High level of pollution

UN has said that the pledges to reduce CO2 emission by the countries will reduce global emissions by just 1 per cent by the year 2030. For considerable positive effect, the emissions have to be cut by 45 per cent.

UN's latest assessment of emissions covers pledges of 75 of the 197 signatories to the Paris accord. The list does not include countries that have major contribution to global emissions. These countries are yet to submit their pledges to the UN. A collective action is needed indeed.