Ash from Iceland

There is a limited window of opportunity from today through tomorrow across the UK for volcanic ash fall from Grimsvotn in Iceland. The British Geological Survey (BGS) along with Edinburgh University and the Met Office are coordinating an exercise in ash collection and schools and individuals can get involved. The instructions are on the BGS website. This can be done with basic items available in any home or classroom.
Click here for some background information about the eruption.