[general_re]

Some of their work was quite elaborate. Perhaps someone here can outline the technique involved ....

I could tell you, but then my alien masters would...let's just say I'd "disappear". ;)

It's not nearly as hard as you might think - like I said in #55, the equipment you'd need is strictly bare bones stuff...

[PatrickHenry]

All you need to know from Scientific American: Crop Circle Confession .

[Texasforever]

The answer is obvious, the contrails did it.