Beekeepers in northeastern France found themselves in a sticky situation after bees from their hives began producing honey in shades of blue and green.
The coloured honey could not be sold because it did not meet France’s standards of honey production: It was not obtained from the nectar of plants and it deviates from the standard colouring of honey (nearly colourless to dark brown).
That’s bad news for a region that produces a thousand tons of honey a year and has already had to cope with a high bee mortality rate and low honey production after a harsh winter. An investigation by beekeepers in the town of Ribeauville uncovered the cause of the problem: Instead of collecting nectar from flowers, local bees were feeding on remnants of coloured M&M candy shells, which were being processed by a biogas plant roughly 2.5 miles (4 kilometres) away. Learn more here.