So as long as LESS than 50% of the original article is copied and pasted AND a link to the original story is provided there is no infringement, is that correct? Or does the copyright notice at the end of the article prevent ANY reference to it?
Non-profit fair use guidelines (meaning you aren't posting something that gains you money, nor are you attempting to pass someone else's work off as yours) that are used in copyright law along with the policy of this forum, both allow the original post.
Matter of fact, it was better done than most. Didn't post the whole article, just the salient features/summary, and included the link to the original for author information and the rest of the article.
Speaking as a teacher who shows kids how to quote and cite correctly for scientific research articles, good job.