Yes it looks like they do deduplication, based on the HTML source: for (var i in data[yr]) { var story = data[yr][i]; if (seen_titles[story.title]) c

Yes it looks like they do deduplication, based on the HTML source: for (var i in data[yr]) { var story = data[yr][i]; if (seen_titles[story.title]) continue; seen_titles[story.title] = 1; // ...add story to list of stories };