Only a few years ago, blogs listed ham radio alongside 35 mm film and VHS tape as technologies slated to disappear.

They were wrong.

Nearly 700,000 Americans have ham radio licenses — up 60 percent from 1981, a generation ago. And the number is growing.

Ham radio will never have the sex appeal of the iPhone, but it does have a certain nerd appeal, says Allen Weiner, an analyst at the technology research firm Gartner.

According to numerous sources on the Internet, in 2012 a planet called Nibiru will collide with Earth, resulting in the extinction of the human race. Or the Earth's magnetic poles will flip, causing the rotation of the planet to reverse, resulting in the extinction of the human race. Or the Earth will fall into something called a "dark rift" in the Milky Way — resulting in the extinction of the human race.

So, what's NASA doing about it?