Next Up On The 2010 List Of Things That Will Destroy The Planet:

Jet contrails.  They block out the sun.  You'd think that they might be a great tool for fighting Man-Made Global Warming™, but not so.

Comments

[Sam L.]

I've seen contrails on a cloudless day, and the day remained cloudless. On the other hand, on overcast days I see no contrails at all.

[ZZMike]

The Daily Mail misses the point entirely. We all know that contrails are a sign of the government spreading mind-control drugs all over the country.

But there's a silver lining here:

"Experts have warned that, as a result, the amount of sunlight hitting the ground could be reduced by as much as ten per cent."

Global warming? Solved.

[Max]

It seems that these must be inherently negative. If they were viewed as positive, they'd be called "protrails".

Hey, where does AlGore lie on all of this?