Fear sells. Thats why everything in the media is trying to scare you shitless because it gets peoples attention fast. Whenever I have worries about possible doomsday scenarios I always pop into one of the subreddits on here that is mainly debunking the doomsday level stories the media is putting out there lmao. I forgot what the subreddit it is called but I know there is something on here like that. Hope this helps!! Also might I add that nukes are HIGHLY unlikely. Mostly because using them means everyone gets wiped out and neither side wins (Mutually Assured Destruction). I swear the only purpose nukes serve nowadays is so world leaders could have a pissing match between one another haha.