Sometimes when you’re really mad and you’re an adult, you just want to throw something on the ground and smash it to smithereens in order to vent your frustration with “the system”.  In fact, in the United States each year 300 million tires are thrown on the ground by adults of both genders.  Some of these tires are then buried under other trash and discarded objects in landfills, and some of them are sheepishly picked up again and burned for fuel in cement kilns.  For a long time, throwing tires on the ground …