There was a scare that we were running out of trees, due to our addiction to railroads, and thus railroad ties, in the 1890s-1910s.
In the 1970s, there was a scare that the Concord and the Space Shuttle exhaust would deplete the ozone layer.
There was a scare that the plastic rings that held together soda cans would choke sea turtles into extinction.
That landfills are filling up and we have no place to put anything.
That genetically modified foods will destroy the ecosphere.
That fertilizer runoff into the ocean causes algae blooms so large that it will suffocate vast areas of the ocean biosphere.
You forgot the population explosion....
1989 Power lines (electromagnetic emissions) cause cancer
1999 Cell phones (electromagnetic emissions) cause brain cancer