Hornet Juice. If Japanese long-distance athletes perform well it might be because they are fuelled on "hornetjuice", a fizzy drink containing a chemical solution fed to the enslaved parents by giant Japanese hornets' maggots. The grub spit which propels the adults on marathon flying missions in search of meat to bring back to their offspring is one of life's natural performance enhancers. Mary Colwell investigates from Japan. Repeated from yesterday 9pm