Hiyah Loam,
I am a fan of some of your other posts

Thanks for posting your thread it gives us all a lot to think and type about.
I propose that instead of being undue alarmists on this topic, let's look at the actual evidence.
That said....I did a simple google search and found this:

What species are going extinct?
The best known groups of organisms are birds and mammals. Since the year 1600, a total of 83 mammals species (2.1%) and 113 birds (1.3%) are known to
have become extinct.
www.grinningplanet.com...
Since 1500, 784 extinctions have been documented by the International Union for Conservation of Nature and Natural Resources.
en.wikipedia.org...

Over 99% of species that ever lived are now extinct, but extinction occurs at an uneven rate. Based on the fossil record, the background rate of
extinctions on Earth is about two to five taxonomic families of marine invertebrates and vertebrates every million years.
en.wikipedia.org...

They are known ominously as the Big Five — the five greatest mass extinctions over the past 500 million years, each of which is thought to have
annihilated anywhere from 50 to 95 percent of all species on the planet.
www.msnbc.msn.com...
All I am saying, before everyone jumps on me here....
Is that mass and almost total extinctions have been going on for MILLIONS of years....way before "man and his polluting ways" have come onto the
scene.
In fact I propose that we are living in historic times now, that humans can actually reverse the harsh force of evolution and actually
save
save certain species FROM extinction.
Did you all ever look at it like that?
We hold the power over saving vast amounts of animals from the jaws of extinction through our Endangered Species conservation laws, our breeding
programs at the various zoos and all the allocated protected parks, marsh-lands and pristine wild life preserves around the globe.
I think it's time that we stop being so "alarmist" in our thinking and look at the gigantic picture out there...
Yes we might be having an effect on the planet...but when you look back 500 MILLION years, we are but a spec on the "causing mass extinction" list.