Today's interesting fact has to do with the islandic volcano, Eyjafjallajokull.

Recently this volcano has been delcared to be a green eruption.

The reason for this, is that the amount of greenhouse gasses it produced are less than the amount of greenhouse glasses that would have been produced by the planes that the eruption grounded.

It says something that the planes flying to, from and within Europe, produce more CO2, that a series of volcanic eruptions.