Extinction is forever
Mass extinctions are nothing new in the history of this planet. Scientists have identified at least five events in the history of Earth in which an estimated 75 percent of all species then on the planet disappeared in a few million years or less. Many scientists believe that we are now in the midst of a sixth such event and that this one is largely being caused by human beings. The impetus for this suspected mass extinction is human-caused climate change . Scientists suspect that their study which identified this phenomenon may actually be underestimating the impact and just how many species might disappear. Although it is virtually impossible to link any one species' fate to global warming, there is no doubt that animals' ranges are changing in response to the changing climate. I saw an example of that just today on a road trip here in Southeast Texas. I saw a bunch of Black and Turkey Vultures at a carcass next to the road and when the birds flew up, I noticed that one o...