No news sites change headlines and edit articles all the time. Often there's a "last updated" date on the article and it can be days or weeks later than the ori

No news sites change headlines and edit articles all the time. Often there's a "last updated" date on the article and it can be days or weeks later than the original posting date. The last-updated date is better than nothing, but without a changelog it's very hard to know what version of the article you or anyone else read at any given time.