Mason Dixon

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BERLIN - SEPTEMBER 18: A fourth-grade student works on homework in the elementary school at the John F. Kennedy Schule dual-language public school on September 18, 2008 in Berlin, Germany. The German government will host a summit on education in Germany scheduled for mid-October in Dresden. Germany has consistantly fallen behind in recent years in comparison to other European countries in the Pisa education surveys, and Education Minister Annette Schavan is pushing for an 8 percent increase in the national educaiton budget for 2009. (Photo by Sean Gallup/Getty Images)

Students who do homework get better grades. Really? Well, science says so. Studies have proven it! What else is obvious, but someone still had to do a study just to confirm it?

Your cat IS ignoring you. Really? The University of Tokyo told us so!

High heels hurt. Women who wear them regularly could have told us that, but the Institute for Aging Research still had to confirm that one.

Pigs love mud. Really? In an issue of Applied Animal Behavior Science there’s a study to explain that one.

What else is so obvious but still needed a study to tell us? Click here to see the full list from Mental