As if there aren't enough hazards in the air and streets of Shanghai now we have to watch out for stinging caterpillars that lurk in trees lining the streets of downtown. We were in the affected area on this fine, cool day and while we took precautions it proved a challenge. Walking while looking up at tree limbs put us in danger of tripping over the myriad of holes, parked bikes, fire hydrants, and other objects placed strategically in the middle of the sidewalks. It also put us at the mercy of the shoeshine terrorists - those aggressive touts that sneak up and daub shoewax on your shoes while you walk by (thinking you're stupid enough to pay them to wipe it off).