“Over the last two weeks, one of the largest repositories we index, Semantic Scholar, removed most of the articles it had been hosting. The end result for Unpaywall is that about 1 million formerly Green OA articles are now Closed. This is about 12% of all Green OA. We’re working on finding new locations for as many articles as we can.
The total number of articles removed from Semantic Scholar was about 8 million, but most of them are still OA because we had other locations….”