21 Protection Against Pollutants and Disease
We have a primal fear of beasts such as mountain lions, wolves, and bears, but there’s no doubt that in almost all circumstances, we’re the ones calling the shots. When a predator steps out of line, we deal with the problem with ruthless efficiency—whether it’s with a round of buckshot or a tranquilizer dart. In the end, far more people are killed in the United States by lawnmowers than by animals of prey.
The enemies we can’t corral with such ease tend to be of the microscopic kind: a toxic cloud floating through the air or a deadly disease carried by mosquitoes or fleas. Against such adversaries, ...
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