Yes! That was the Global-cooling scare. Global cooling or the talk of the coming Ice age ended the day Mount St. Helens erupted.
http://en.wikipedia.org/wiki/Mount_St._Helens
That event according to the global cooling and nuclear winter scaremongers should have plunged the Earth into a several decades long population killing year round winter. The end result of this massive eruption was pretty sunsets for about 2 years. The same people pushing the Global-cooling scare started the ozone hole scare. Dupont's patents on Freon were about to run out so anyone anywhere could start producing and selling it. Dupont's strategy was simple. Produce an alternative to Freon with patents and have Freon made illegal to be used in this and other countries. Environmentalists are an easy target and are easily duped into supporting anyone pushing an agenda to eliminate anything that can be clamed to be a pollutant. As an example of how successful this is every animal on this Earth is now emitting a so called greenhouse gas "pollutant" with every exhale of it's breath. This same exhaled gas is required by plants in order to survive. Animals require Oxygen and plants require Carbon Dioxide. Plants produce Oxygen and animals produce Carbon Dioxide. So what do the Environmentalists want to do? Kill off all the plants?!