conventional radar

Stealth Threat

Whoops! Phone signals may unmask a $40 billion flying secret.

Driving home from work, you suddenly remember that a few of the T-ball kids are supposed to come over after the game. Should you pick up a couple of pizzas on your way? You pull out your cellular phone and call home to check.

[ Read Full Story ]

Flickr Block Header

Share your photos in the Pop Sci pool at www.flickr.com!
Current theme: Spooky Science
Our latest winner

Subscribe for 2 free issues!

POP_embeddedForm_cover_Dec08.jpg