With COVID back, censorship is back, and now it's taken a particularly dangerous form, not just on social media, but on leading academic exchanges. The huge Social Sciences Research Network (SSRN), run by Netherlands-based publishing house Elsevier, is not a site most people know about, but it is a behemoth in academia, extremely important to professors for getting their work out there and advancing within the academic community. That's where censorship on COVID is happening, which could have far-reaching consequences for public policy and the free exchange of ideas. SSRN's plain, bare-bones front page on its site describes itself this...