Iceland Volcanoes have to be taken seriously by Great Britain and Europe

The first problem is when these volcanoes get going the pyroclastic glass is just so high and so fine that it can bring jetliners down because their engines stop working when they fly through this stuff. The second problem is this fine pyroclastic glass powder blocks the sun because it tends to stay in the upper atmosphere once it gets there for a long time slowly traveling around the world.

For example, one of the basic causes of the French revolution in the 1790s was that people were starving because they couldn't get enough sunlight for their food to grow. So, when they complained to the aristocrats and royalty that were always fed first they got the famous, "Let them eat cake!"

However, when people are starving that is only really going to upset them to hear stuff like this especially from Queen Marie Antoinette who was an Austrian Princess married to their Louis the XVI th.

So, in the 1790s heads started rolling including any royalty (including Louis XVI and Marie Antoinette) and any aristocrats who didn't leave France and go to another country. So, I think all of Europe might have to take this more seriously now just like in 2010 and in the 1790s if one or all of some of the volcanoes are going to take off and blow pyroclastic glass into the upper atmosphere once again.

At the very least temperatures downwind of these volcanoes and growing things is greatly going to reduce during these times if this goes off big time once again.

And once again jet airliners need to stay clear of pyroclastic glass areas where it is concentrated beyond a certain degree at higher altitudes or at whatever altitude it is at when they encounter it.