Over the past 15 years, numerous colonies of bees have been decimated throughout the world, but the causes of this disaster remain unknown. Depending on the world region, 50% to 90% of all local bees have disappeared, and this epidemic is still spreading from beehive to beehive - all over the planet. Everywhere, the same scenario is repeated: billions of bees leave their hives, never to return. No bodies are found in the immediate surroundings, and no visible predators can be located. Should we blame pesticides or even medication used to combat them? Maybe look at parasites such as varroa mites? New viruses? Travelling stress? The multiplication of electromagnetic waves disturbing the magnetite nanoparticles found in the bees' abdomen? So far, it looks like a combination of all these agents has been responsible for the weakening of the bees' immune defenses.