Before and after coronavirus - scenes from the world's biggest cities

These are the astonishing before and after scenes from cities around the world - as countries go into lockdown to combat the coronavirus. (Subscribe: https://bit.ly/C4_News_Subscribe) ------- Watch more of our explainer series here - https://www.youtube.com/playlist?list... Get more news at our site - https://www.channel4.com/news/ Follow us: Facebook -   / channel4news   Twitter -   / channel4news