For the citizens of Delhi, the Yamuna, the city's most prominent river, has become one of the many symbols of just how polluted their city is. Despite it being a hot topic during every election that the city sees, the change is hardly ever visible. However, even with the existing pollution levels, the river remains to be a lifeline for those who live on its banks. Today, The Indian Express' Sophiya Mathew and Devansh Mittal join us to talk about everything that they witnessed as they travelled from from Palla, where the Yamuna enters Delhi from Haryana, to O...