I suffer from the same problem but on a lower quality level, I mainly consume news of various kinds. The main problem here is to identify those parts which actually contain information I do not as of yet know.

If some delay is acceptable (as it seems to be the case with your sources) maybe an automated filter based upon citations (or something equivalent) might be possible. Of course you would import all biases of the people who put the citations, then again it might work as a simple crowd-sourcing mechanism.