Modern Marvels

This countdown special kisses the conventional goodbye, raiding the Modern Marvels archives for the most bizarre wonders we've ever presented. Our top ten contenders demonstrate that the inside scoop on innovation often lies outside the norm. You'll be scratching your head at the weird assortment of oddities–technologies ranging from a gooey slime that could be a terrorist's worst nightmare…to an exacting art form requiring the help of millions of ravenous beetles. The final destination at number 1: a devise so strange and destructive that its inventor allegedly destroyed it to avert a catastrophe.