Our impact is minute on the global scale of things, the media feeds us exasperated information to help generate a culture of fear. Notice how there's always one main subject the media uses to try fear monger, now its Climate Change and the Credit Crunch, before that it was the Threat of Terrorism, before that The Millennium Bug, etc etc. I mean the stories themselves are all fine and good but when they're just repeated over and over it just creates an uneeded state of fear. I'm sure if you could go back in time a year or two and only allow the news to broadcast reports of the Credit Crunch for one week then its effects would be far less than now, as people see this ongoing "crisis" on the news and become scared to spend, creating the hole we are in now.
<Back on topic> :P