Great news for airport security
> According to UAH, their echolocators can now detect "certain objects inside a bag" or even the bones within a person standing in front of them.
So we can dump all this nasty old X-Ray equipment and intrusive millimetre-wave gizmos that can (apparently) see through your clothes. All we need to do is to teach the plastic piggies who man the security barriers how to click their tongues properly.
Personally, I don't buy it. this sounds like a complete exaggeration of what might, at best, be a rather limited party trick. As it is, you can detect things like your hand, right in front of your face just by noticing the difference in ambient noise reflections (try it: "passive" echolocation) - or even just by looking at them! I can't help thinking that if this was such an awesome power, humanity would have evolved, or developed it, millenia ago. Maybe the reason we didn't is that we no longer go flying through the skies at dusk, trying to catch insects on the wing.