Are these balloons biodegradeable or are we just going to litter the stratosphere? It would be nice if the balloon could be retreved along with the transmiter. This is why I like the unmaned solar powered cellular transmiter plane idea. <img src="/images/graemlins/grin.gif" alt="" /> <img src="/images/graemlins/grin.gif" alt="" /> <img src="/images/graemlins/grin.gif" alt="" /> <img src="/images/graemlins/grin.gif" alt="" /> <img src="/images/graemlins/grin.gif" alt="" />