Delhi Chief Minister Arvind Kejriwal attended a conference on 'Daring cities 2020' on October 07 along with other leaders from around the world via video conferencing. Kejriwal listed down the various measures undertaken by the government to tackle air pollution. Kejriwal said, "Delhi has been suffering because of air pollution for some time. But in the last few years, we have taken some bold and imaginative steps. I would like to share some of the steps, which have been undertaken. Every winter, Delhi becomes a gas chamber and 2015-16, winter was pretty bad, because of the pollution coming from neighbouring states due to stubble burning. Therefore we implemented odd-even scheme. The other major steps include tree plantation and use of public transport."