Few Recall the Way Earth Was Before Industrial Revolution; Yet Ahead...

Before the Industrial Revolution the ecosphere was more or less healthy. Since then it has fallen into decay. It is the commons that everyone exploits and few protect. Like naive children they regard it as a cornucopia without end. Life is an ever-replenshing bowl of chocolates...

http://www.ecology.com/2011/09/18/ecological-impact-industrial-revolution/

Here is a fair video explaining in a nutshell some ecosphere challenges...