The looters are using Google Earth, too. They're coming in with metal detectors and geophysical equipment. Some ask me to confirm sites.

The most exciting part of what I do is understanding the scale of what we don't know. There are just countless archaeological sites all over the world, and one of the most important and best ways of finding them is using digital technology.

Google Earth is an incredible resource because from hundreds of miles in space, we can zoom in, and we can find things. Everyone always looks for their house first. That is the tip of the iceberg with remote sensing.

We emphasise the features on satellite maps by adding colours to farmland, urban structures, archaeological sites, vegetation and water.

I keep being surprised by the amount of archaeological sites and features that are left to find all over the world.

I am one of many people documenting damage and looting at ancient sites from space - it is such a crucial tool.