Zep

Been out of the loop for sooo long, but it seems to me the occurence of dangerous allergies has increased tremendously since the advent of bio-engineered foods. Certainly there may be several reasons for this, and the increased number of occurences hardly outweighs the number of people this feeds. But what if we inadvertently created something that causes all the honey bees to die? How long are these newly altered crops tested before they are released for public use? Are they tested in a closed system for 5-10 years? Can some one link me to the procedures for allowing their use?