we could send invisible cameras to the past

Descripción

and take a look at how people lived in the middle age, ancient greece or whatever we fancy.

Comentarios

Consider Google Earth... high-res photos of more and more of the planet... imagine if an alien lifeform zipped past Earth 500 years ago or 2,000 years ago taking images for their own version of Google Earth... (not my original thought... from a TED video perhaps?)