Open access to scientific papers will occur eventually, says Philip Campbell, editor-in-chief of Nature, The Guardian reports. "My personal belief is that that's what's going to happen in the long run," Campbell said at session on open access at the Science Media Centre. Campbell added that he has found that reading and researching open-access papers has been a "very compelling" experience. However, Campbell noted that if gold-level open access — in which authors pay a fee to have their work made freely available immediately — becomes common, it could cost more than $10,000 to publish an article in Nature or some other prestigious journals.