Learn how to identify a luna moth. Caterpillars go through several instars before creating a cocoon. These instars range from white-and-black striping to green with blue spots on the back.

Check your poo for a blue or green-blue tinge and write down what time you see it. Work out how many hours it has been since you ate the muffins. This is your gut transit time. Be careful when ...

Beekeepers in northeastern France were bewildered when their bees produced blue and green honey. The cause was traced to residues from M&M's candy waste processed at a nearby biogas plant.