Honey bees in Britain may well be dying as a result of interference in their navigation systems.
A new German study claims that the radiation from mobile phone signals interferes with the bees' navigation system, stopping them from finding their home hives.
In some cases, 70 per cent of bees exposed to radiation failed to find their way back to the hive after searching for pollen and nectar, according to the research by Landau University.
The researchers placed cordless-phone docking units, which emit electromagnetic radiation, into bee hives, during the experiments.
Bee experts are struggling to determine the cause of colony collapse disorder (CCD), a mystery condition in which bees suddenly abandon their hives and disappear to die.
In America, 24 states are affected and losses of 50 to 90 per cent of colonies have been recorded. CCD recently spread to Poland, Greece, Italy, Spain and Portugal and last week some keepers in Britain reported losses exceeding the 10 per cent of colonies that usually die during winter.