There is actually a website called 80percentmental.com. With a superb lack of irony. "Sports Are 80 Percent Mental" apparently.

80 Percent of global water supplies are at risk, says the National Geographic. I don't doubt it. Seems like a pretty good resource on why to give a damn about our water, or upcoming lack thereof.

"80 percent of success is just showing up" Woody Allen tells it like it is.