Often remade, often imitated, 'Invasion of the Body Snatchers,' 70 this month, touched a nerve. Here's why ...

This classic, influential sci-fi movie is 70 years old, and its themes are even more poignant today.

It's a big universe out there, and while we're all for exploring it, a specific subgenre of science fiction movies has hinted that it might be a bad idea. Alien invasion movies have come in droves ...