With one exception all you mention have happened before. Naturally.
The pollution from coal is the only one that CAN be directly attributed to man.
What gets me bent is that we are wasting time and effort fighting over coal power plants in the US that have 1990s era scrubbing technology over CO2 concerns while China and India flood the skies with rancid smog from thousands of largely unfiltered coal power plants.
While the UN and global warming proponents squabble over CO2 emissions some very real pollutions are killing people and poisoning our food supplies. Mercury levels in global fish stocks are rising.
How about they focus some effort on the real, proven pollutions of lead, mercury, sulfur and a host of other toxic materials being pumped into the air every day.
If they really cared about the planet they would focus on undisputed problems.
