The effects are as numerous and amorphous as the causes. But recently, in eager collaboration with plaintiffs' lawyers, they've recognized there's more to be made in slandering the snake than in selling the snake oil. Pick a pollutant and an exposed population. Then prepare the technicolor displays. There are dozens of lab tests for measuring the health of the complex immune system.
Results always vary widely, even among perfectly healthy subjects.
So when the labs are done with the testing, you'll have a huge chart to trundle into court, with rows of plaintiffs' names, beside column after column of numbers. Now call your favorite clinical ecologist to the stand. There's chemical AIDS in the air, he'll attest. Just look at that red. Which explains the plaintiffs' coughing, constipation or cancer.