|
Hmmm...no I'm not saying that humans are the root of all our problems. We do however seem to have a habit of carrying on activities regardless of the potential consequenses to ourselves and every other living thing on this planet. The localized reduction in rainfall is only one example. Oh and btw, the records I spoke of are human records. Geological and biological rainfall records go back along way further than that. When taken over a few thousand years of time these current hydrological activities are anomolous.
There are no guarantees. Either way. Yes the earth has swung from iceage to tropical paradise and back again a number of times. This usually happens over tens of thousands of years though. Our current activites have the potential to act as a catalyst and bring about changes over periods of hundreds of years, not thousands. And the out come of this is pretty scary. For one thing I would imagine that mankind would be very lonely. Living things take time to adapt. Hundreds of years is too short a time for this to happen. Our decendents could find that our current activities have a similar effect to that well known incident 65 million years ago.
Unfortunately I don't know many people who take the philosophy that we are only custodians of this planet for our children ad infinitum. It is not our personal play thing to do with as we want, or ignore at our peril.
|