In the third instalment (you can scroll down to the end of this article for the first two parts), we try to answer the question: ‘As greenhouse gases occur naturally, why do emissions from human activities matter?’But first, what are greenhouse gases? Greenhouse gases (GHGs) are those gases in the Earth’s atmosphere that trap heat. At the heart of the problem are not greenhouse gases but their concentration, meaning their amount in the atmosphere. Carbon dioxide levels. Credit: NASA Carbon dioxide levels.

Source: Indian Express January 16, 2024 07:12 UTC