I've had sleep issues in the past and some things that I found helpful were waking up at the same time every day and not going to bed until I was really tired. That way I spet less time awake in bed with anxiety about not being able to sleep.
I don't think it's possible to eliminate fake news. People are going to write whatever they want to as long as they can get something out of it. All we can do is support publications that have a reputation of integrity. If it becomes profitable to be honest then more writers will be. For now though, it's up to each consumer to fact check for themselves which unfortunateley isn't practical.
I don't think we should worry about Earth's population being too small before we can comfortably support everyone that's already here, and we're still a ways away from doing that. Can you elaborate on how you think more data and more money will negatively effect us in the future? Do you think there won't be enough people to manage it all?