http://www.telegraph.co.uk/earth/environment/5208645/Drowning-in-plastic-The-Great-Pacific-Garbage-Patch-is-twice-the-size-of-France.html
Here is an example of human activities affecting the environment. But this article identifies a rather large problem, not yet catastrophic, that needs to be brought to all of our's attention. There is no proposal to suddenly ban plastic, instead use our ingenuity to come up with an alternative way to deal with the problem. I am more likely to adjust my consuming habits through education than by being brow beaten by the alarmist's that I have to give up a lifestyle that I enjoy to achieve some obscure goal.