We see today's problems transposed like one of those school art books with the transparent sheet where we can trace an outline over a picture.

CNN: What Obama can learn from Lincoln

The team's work offers such a sharp picture of the past that it is possible to trace the histories even of individual communities, such as one in Essex whose inhabitants built, used and then abandoned an enclosure within the span of a single generation.

ECONOMIST: The Neolithic

Through techniques such as visualization, we can picture how to kick the winning field goal and then trace through every step necessary to achieving the task.

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In one picture, the woman is seen with a man, whom police also wish to trace as a potential witness.

BBC: Student protest footage released by Met Police