1. A system for sorting a plurality of objects within a waste stream comprising: the waste stream comprising porous and non-porous objects, wherein the non-porous objects comprise plastic objects and the porous objects comprise at least one of wood and rubber; an electromagnetic radiation source; a water source for adding water to the plurality of objects, wherein at least some of the porous objects absorb some of the water; a dryer for removing water from the surface of the non-porous objects; a thermal image captured by a thermal imaging camera, wherein the thermal image comprises differentiated images based in part on water absorbed by porous objects; a computer, logically connected to the thermal imaging camera and operable to evaluate the thermal image captured by the thermal imaging camera; and a sorter, logically connected to the computer and operable to divert one or more of the plurality of objects.