Paul Smiths, NY, Mar 15, 2012 — A common (if unwelcome) sight on trees in the apple and cherry family is the nest of the tent caterpillar, whose voracious appetite can completely strip a tree of foliage. These moth larvae are unusual, both in their engineering feats and their social organization. Martha Foley and Dr. Curt Stager explore the life cycle of this nemesis of orchard and yard.