There Is a Poisonous Alien Caterpillar Threatening to Invade the London Olympics. Seriously.Kif Leswing5/07/12 7:23pm662EditPromoteGo to permalinkThe Oak Processionary Moth is a nasty little beast. It's native to Europe, but didn't show up in the United Kingdom until 2006, when a few eggs hitched a ride on oak trees transplanted to London. Since then, it's been causing environmental chaos. Now it's threatening to seriously screw up the Summer Olympics.