How do I see which hubs are making the most ad revenue?

While AdSense will let you track earnings by individual Hubs, the HubPages Ad Program does not. You can get a sense of eBay and earnings for each Hub but even that isn't specific.

If you're getting paid directly from Google AdSense you can set up customized URL channels for each hub. That will tell you which hubs are making money and how much. There's also Google Analytics, but it can be hard to understand.It's information overload to many people.

As was previously stated, if you're getting paid by HP, you can't really track earnings per hub.

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.