[Uncle Miltie]

"We’ve faced environmental issues throughout our history, but it’s difficult to remember one which has gained such “status” in such a short time."

1) Overpopulation
2) The Ozone Hole
3) Industrialization (Malthus)
4) Soylent Green
5) DDT
6) Global Cooling

In my lifetime (excepting #3 above), the left has always had the "Mommy Earth needs Socialism" program.

[Sarajevo]

You forgot Acid Rain:-)