You could implement ua-parser and then use the Can I use... matrix to build which browser versions support it. It's not very ideal but I can't think of another way to feature detect from node.
You can use a cookie to transport that value to the server. Otherwise, it will be pretty hard to distinguish between clients (eg. In case you want to send an HTTP request containing the relevant data).
To receive the cookie, you would need to send an HTTP request after setting it.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.