New research suggests yet another potential contributor to CCD. The problem? We’ve been stealing the bees’ honey and instead feeding them high fructose corn syrup. The problem isn't so much the fructose as the absence of chemicals in the honey.

Bees are exposed to a huge variety of plants because they gather nectar from the spring through the fall. The honey they make from these diverse nectar sources varies according to locality (leading to the unsubstantiated belief that eating local honey can alleviate seasonal hay fever). And bees’ “immune systems”—detoxification enzymes used to rid the body of foreign chemicals, like pesticides—are known to be induced by different stimuli than those of other insects. So scientists decided to check whether any components of honey can induce bees’ detoxification enzymes.