<span style="color: #222222;">Delhi Chief Minister Arvind Kejriwal said that pollution level has reduced in Delhi during the last few years but more steps need to be taken to control this problem.<br />''<br />''Launching the anti-pollution campaign for a clean and green Delhi, he said, pollution can prove fatal in the Covid-19 pandemic situation. He said, stubble burning is one of the causes of pollution in the winter season and to overcome this problem Pusa Research Institute has prepared a solution which will convert the stubble into compost.</span><br />