I'm worried about this like I'm worried about the fact that our sun is going to burn out in 4 billion years. This is just too convenient for the wacko environmentalists "Sky is Falling" politics (religion is a good way to describe it).
Don't forget that we now have a worldwide, bloated media industry that is starving for "content" and a huge percentage of the population that gets their hard info. from Hollywood movies.
If you really want to worry about something real, how about radical Islam and North Korea getting their hands on nuclear weapons.
When I was a kid we practiced curling up under our desks to prepare for an atomic bomb attack. Now that was upsetting.