Funny post on boingboing today on scary but unlikely terrorist plots. My favorite (of course):

Terrorists could infiltrate the world's car companies and manufacture large, fuel-inefficient vehicles like Hummers. Once America has gone all SUV, the resulting carbon emissions would contribute to polar melting and global warming, causing devastating hurricanes through the southwest, killing and displacing millions of Americans. Ban car companies now, or the terrorists have won.

Here's mine: Terrorists could release toxic substances into our food, our water, our air - that bio-accumulate over time. Slowly poisoning us all.

Ha, ha, ha. That could never happen.