We live on an extraordinarily fragile place that is fraught
with danger: a tiny rock hurtling through space, wracked by
violent movements of its crust and subject to dramatic
climatic changes. Bill McGuire, professor of geohazards at
University College, London, considers the threats to
humanity from our own planet - and from Space...
http://books.guardian.co.uk/firstchapters/story/0,6761,673878,00.html