My thanks to sclerotic_rings — always a font of wondrous knowledge — for pointing out LiveScience.com's list of the 20 most popular science myths. You know, those things that you've always heard, so they must be true...only they aren't. My favourite is undoubtedly that old bit (at #4 on the list) about how humans supposedly use only 10 percent of their brains. Sure, most humans act that way, but it just ain't true. Still, this bit of misinformation has been used to bolster all manner of absurd claims over the decades. And I expect it will be used to do so for many more decades, no matter what we might know to the contrary. Some myths are just too convenient to die peacefully.