Why are bananas radioactive?

Bananas are actually radioactive. I remember learning this is school but it's a fun article to read in these days where we in the US are more scared of radioactivity than the Japanese who a) HAVE been nuke bombed, and b) HAVE a nuke plant in trouble.

Are they freaking out? Well, maybe a little, but since their culture runs on stoic adult behavior and science instead of reality show hysterics and "intelligent design" they actually have a handle on things.

Incidentally, don't tell Republicans about this thing about bananas. Between their end times hysteria and their hatred of all things brown people grow (and eat, and make, and reproduce) they'll ban the fruit in mere moments.