Scientists are obviously confused about the issue. If global warming is occurring, there's probably not much we can do about it anyway. The annual ozone hole that appears over Antarctica was first measured in 1957, long before supposed ozone-depleting chemicals were in common use. CFCs are not likely to be the source of the chlorine that is depleting the ozone layer because volcanoes are a much more prolific source of chlorine. If there is in fact some reduction in the ozone layer, the appropriate way to avoid additional cases of skin cancer would be to provide more sunglasses, more hats, and more suntan lotion.
Acid rain is only a minor environmental problem.
Accounts of acid rain are exaggerated because droughts caused lakes to appear more alkaline than nomal in the years they were first measured. Without pesticides, starvation would stalk the planet. The dangers of dioxin are vastly overrated. Exposure to dioxin is considered by some experts to be no more risky than spending a week sunbathing. Too many chemicals have been overregulated.