The article, Taming volcanoes, in world-science.net, a researcher proposes dumping limestone blocks in the way of streaming lava as a way to slow it down, limit its reach and save lives.
Good idea? I don't think so. Imagine someone is going to ... sneeze, and in order to save the people around from exposing to what he is going to expelled out into the air, lets stuff cloth into his mouth! What would happen? He probably will still sneeze. However, since the mouth is blocked, whatever needed to be expelled from his body has got to go through other channels, such as the nose, ears, and even the eyes! This guy won't be happy with this!
I bet the Earth and Mother Nature would not like to be treated this way too!
It is not volcanoe eruptions that kill lives, but the lack of freedom, be it political or otherwise, for people to choose to live away from volcanoes.
Just as the recent earthquake in China. Which kills more people: the earthquake, or the badly built schools? I am curious to know how many animals are killed?
I think from science, we understand more about nature so that we can live with it, but not to distort it for our selfish conveniences.