1.0 link Rainbow Dash Network http://rainbowdash.net/ Narwhal (narwhal) http://rainbowdash.net/narwhal http://rainbowdash.net/notice/2502346 @<span class="vcard"><a href="http://rainbowdash.net/user/247" class="url" title="Desmond Roseluck"><span class="fn nickname">desiros</span></a></span> Bananas are naturally radioactive, since they contain large amounts of potassium, and roughly one in every 100 potassium atoms is an isotope known as potassium 40.