we have deeper, senhor, an assistant professor of economics at ambedkar university in delhi, dr. sirica verner, an ear, nose, and throat surgeon, and karthik is a research fellow at the council on energy and environment and water. welcome to each of you karthik. i'll start with you. if i may, this pollution appears every autumn. it's not new. why is it still happening? and why is it getting worse? i think it's happening everywhere, primarily because you know, this is when the winter sets in. so it's as much a meeting phenomenon as it is a manmade phenomenon. and is it says basically that this pollution exists around. it just manifests itself in such a worse manner in the windows. so the vehicle or pollution, the dependence on private vehicles. they have the management of solid waste in the city state of delhi, incessant burning of waste that happens of because it's not collected in this post off in an appropriate manner and construction, dust and debris. all of these big sources of pollution which don't get addressed. you're around and it just comes up, you know, in a much bigger