The weird and fascinating world of Reddit has been too large to comprehend all at once, at least until now. Randy Olson, a PhD student from Michigan State University researched how Reddit has changed since its conception in 2005, and made a few stunning graphs that illustrate the rise and fall of topics. The most striking graph provides a stratigraphic look at at the website's past, showing how topics that ruled Reddit in 2006 like "NSFW" and "programming" are no where near as sought out now as topics like "funny" and "WTF." It's almost possible to pinpoint when the most dramatic change occurred by using the graph as well — it came around 2008 when Reddit added a feature that allowed users to create their own subreddits. That small feature was all the community needed to flood the site with subreddits like "firstworldproblems," "todayilearned," and even "trees." These graphs make it easier than ever to take a close look at the peaks and valleys of one of the biggest worlds on the Internet, and they're also just fun to look at.