Lesson #375 - Planetary Collisions

But if you're going to spin such a threat against world leaders, don't start monologuing, because saying "All I have to do is hit this switch and start the destruction of Earth, by making Venus crash and destroy the planet fifty million years from now! Moo-hah-hah-hah!" will really destroy any attempt you have of getting anything in ransom.

(The report on the simulations was both in Nature and was the focus of the 6/12 NPR Science Friday.)