What do you think you know about Hurricane Katrina? An unpredictable mega-storm? Floodwalls weren’t built properly? Anarchy took over in the streets? Wrong. Wrong. And wrong, says Popular Mechanics. If you can sift past the unfortunately funky page layout on this story, you’ll find a fascinating look at the myths of Hurricane Katrina, and some practical ideas for how to better prepare and respond next time. (Ed. This story is from 2006, but I think it’s still interesting in light of the 5th anniversary of Hurricane Katrina.)