Natural disasters in satellite high-def

Dr. Hannah Walker writes: "Check out these images from the European Space Agency. Over the past six years the organisation has been compiling images of some of the world's natural disasters and phenomenon as seen from space — such as Hurricane Katrina, Stromboli erupting and an iceberg smashing into Antarctica and breaking off another berg.

Also, check out Europe covered in snow and ice during a late thawing winter — a really impressive shot — and this sandstorm being blown across the Atlantic from Western Africa.

All these images have now been mashed up with Google Earth."