What exactly is Roundup? How does it work? Why is it dangerous? I've been told it's basically Agent Orange. Is this true? Does it decompose into inert chemicals as touted by Monsanto? I know all about big, bad Monsanto and Roundup Ready and bioengineering, etc. I don't use herbicides as a matter of principle and would just like to be able to speak inteliigently on the issue of Roundup. Thank you, Linda Smith