A few decades ago an iconic advertisement showed an Indian on a hill overlooking a highway with polluting vehicles and trash blowing around. He had a single tear coming down his cheek showing his sorrow about how Americans have destroyed what was once a beautiful land.
Today he might shed more than one tear because we may have cleaned up some of he blowing trash by putting it into mountains he could stand on. Each of the vehicles are emitting far less lead free fumes but now there are many times more vehicles polluting the air with CO2. The Indian saw smoke pouring out of stacks and trash floating in the River. We have greatly reduced the stack pollution and the floating trash. Back then few Americans were concerned about global warming and how the pollution would change the ecosystem so rapidly. Droughts are destroying forests and insects that were restricted to warm winters are not able to live hundreds of miles farther North and at higher altitudes. The same with animals and birds moving farther North as the climate warms. Some move expanding their reach which others move to resist the warming climate. An excellent example is the Flamingo that was once restricted to mostly Southern Florida can now be found in summer as far North as Maine and Minnesota because the long summers and rising seawater is destroying their former nesting areas.
Perhaps the future is so disastrous that an old song may be more apropos than the tear. Maybe the Indian should have been singing “Cry Me A River”.